{
 "manufacturer": "Strato Automation",
 "manufacturer_slug": "strato-automation",
 "model": "OPENSTAT OS537 thermostat, RTU firmware",
 "model_slug": "os537-rtu",
 "aliases": [
  "OS537",
  "OS537H",
  "OS537MHC",
  "OpenStat OS537",
  "OS537-RTU",
  "Strato OS537"
 ],
 "equipment_type": "Thermostat (BACnet MS/TP)",
 "applies_to": "Strato OS537 temperature/humidity thermostats running the rooftop unit, heat pump and small AHU applications of the universal firmware.",
 "summary": "The OS537 is a larger BACnet MS/TP thermostat with 5 universal inputs, 3 analog outputs and 7 binary outputs, plus humidity and (C models) CO2 sensing. Its RTU application covers up to four cooling and four heating stages, economizer with enthalpy and mixed air control, power exhaust, humidification and dehumidification, selected with the MSV-127 preset. The list also includes the radar presence sensor settings.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "Universal firmware 1.2.6 and later",
 "default_device_instance": null,
 "access_inferred": true,
 "notes": [
  "The guide has no read/write column. Access here follows its tags: Cfg, User and Cmd objects are shown writable, Status objects read-only, and BO/AO objects commandable (the guide lists them for output overrides). BV-5 (Occ_Sch) is tagged Status but shown writable because the guide says it can be written for occupancy.",
  "AI-8 RoomCO2 exists only on C models such as the OS537MHC.",
  "BO and AO descriptions are generated from the MSV-127 preset when BV-4 is On.",
  "Multistate state numbers follow the order the states are printed, starting at 1; MSV-223 and MSV-235 print a range.",
  "AV-35 and AV-36 (occupied setpoints) are tagged Status in this guide."
 ],
 "source": {
  "title": "OS537 (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects",
  "doc_number": null,
  "revision_date": "July 2026 rev 0",
  "url": "https://stratoautomation.com/wp-content/uploads/2025/08/OS537-User-Guide-July-2026-rev-0.pdf"
 },
 "integration": {
  "summary": "Select the application with MSV-127, then command system mode (MSV-3), fan mode (MSV-4) and occupancy (BV-5 or MSV-6) and write the room setpoint (AV-1). Read room temperature and humidity, demands, supply and outdoor temperatures and the help message (MSV-100) for alarms.",
  "minimum_points": [
   {
    "ref": "MV 3",
    "name": "MODE",
    "why": "System mode: Off, Auto, Cool, Heat"
   },
   {
    "ref": "MV 4",
    "name": "FAN",
    "why": "Fan mode: On / Auto"
   },
   {
    "ref": "BV 5",
    "name": "Occ_Sch",
    "why": "Occupancy schedule; BMS can write On/Off"
   },
   {
    "ref": "AV 1",
    "name": "RoomTSP",
    "why": "Room temperature setpoint"
   },
   {
    "ref": "AI 6",
    "name": "RoomT",
    "why": "Room temperature"
   },
   {
    "ref": "AI 7",
    "name": "RoomRH",
    "why": "Room humidity"
   },
   {
    "ref": "AV 6",
    "name": "HTG_Dem",
    "why": "Heating demand, %"
   },
   {
    "ref": "AV 7",
    "name": "CLG_Dem",
    "why": "Cooling demand, %"
   },
   {
    "ref": "AV 16",
    "name": "SATemp",
    "why": "Supply air temperature"
   },
   {
    "ref": "MV 100",
    "name": "HELP_mess",
    "why": "Alarm / help message"
   }
  ],
  "enable": "Occupancy can be written to BV-5; MSV-45 selects the schedule source and MSV-6 forces local, occupied or unoccupied.",
  "heartbeat": null,
  "remote_sensors": "Sensor location MSVs (MSV-2, 27, 28, 52, 54, 57, 58) can be set to 'External' to take the value from the network.",
  "setup": [
   "MS/TP is the default network; address and baud are set in the MSTP Config menu. A Wi-Fi option is described in a separate Strato guide.",
   "Strato recommends writing MSVs and AVs at the default priority (16) and everything else at priority 8 down to 3."
  ],
  "gotchas": [
   "Most MSVs are commissioning settings; changing a custom output MSV switches MSV-127 to Custom."
  ]
 },
 "points": [
  {
   "type": "BO",
   "instance": 1,
   "name": "BO_1",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 2,
   "name": "BO_2",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 3,
   "name": "BO_3",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 4,
   "name": "BO_4",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 5,
   "name": "BO_5",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 6,
   "name": "BO_6",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 7,
   "name": "BO_7",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 1,
   "name": "AO_1",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 2,
   "name": "AO_2",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 3,
   "name": "AO_3",
   "description": "Output; function set by the MSV-127 preset",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 1,
   "name": "AI_1",
   "description": "Input; function set by the configuration MSVs",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "AI_2",
   "description": "Input; function set by the configuration MSVs",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 3,
   "name": "AI_3",
   "description": "Input; function set by the configuration MSVs",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 4,
   "name": "AI_4",
   "description": "Input; function set by the configuration MSVs",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 5,
   "name": "AI_5",
   "description": "Input; function set by the configuration MSVs",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 6,
   "name": "RoomT",
   "description": "Room temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 7,
   "name": "RoomRH",
   "description": "Room humidity",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 8,
   "name": "RoomCO2",
   "description": "Room CO2",
   "units": "ppm",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "Motion",
   "description": "Motion detection",
   "units": "",
   "access": "R",
   "states": "On / Off"
  },
  {
   "type": "AV",
   "instance": 1,
   "name": "RoomTSP",
   "description": "Room Temperature setpoint (range 54-90°F (12-32°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "HTG_Dem",
   "description": "Heating demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "CLG_Dem",
   "description": "Cooling demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "Eff_T",
   "description": "Effective temperature used for control (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "SATemp",
   "description": "Supply air temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "SATFRSP_Set",
   "description": "Set supply freezing temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "ECM_min_Set",
   "description": "Fan analog min. output (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 24,
   "name": "Fan_MinOn_Time",
   "description": "Fan minimum ON time (range 0-60 min)",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "OvrTime_Set",
   "description": "Set occupancy override time (range 0-480 min)",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 29,
   "name": "OATemp",
   "description": "Outdoor air temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "CO2_SP_Set",
   "description": "Set CO2 Setpoint (range 0-2000 PPM)",
   "units": "ppm",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 33,
   "name": "MinCLSP",
   "description": "Set minimum cooling setpoint (range 54-100°F (12-37.5°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 34,
   "name": "MaxHTSP",
   "description": "Set maximum heating setpoint (range 40-90°F (4.5-32°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 35,
   "name": "OccCLSP",
   "description": "Set occupied cooling setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 36,
   "name": "OccHTSP",
   "description": "Set occupied heating setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "SP_DB_Set",
   "description": "Set deadband (range 2 to 5°)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 38,
   "name": "Unoc_CL_Set",
   "description": "Set unoccupied cooling setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 39,
   "name": "Unoc_HT_Set",
   "description": "Set unoccupied heating setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 40,
   "name": "STBCoolOffset",
   "description": "Set standby cooling offset (+) (range 2 to 5°)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "STBHeatOffset",
   "description": "Set standby heating offset (-) (range -2 to -5°)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 42,
   "name": "EffCLSP",
   "description": "Effective cooling setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 43,
   "name": "EffHTSP",
   "description": "Effective heating setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 50,
   "name": "RT_Cal",
   "description": "Room temperature calib (range -5.0 to 5.0)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 51,
   "name": "Eff_RH",
   "description": "Effective humidity used for control (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 52,
   "name": "HUM_SP",
   "description": "Set humidity setpoint (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 53,
   "name": "SAH",
   "description": "Supply humidity reading (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 54,
   "name": "SAH_HL_Set",
   "description": "Supply humidity high limit setpoint (range 50-98%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 55,
   "name": "DEH_SP",
   "description": "Set dehum setpoint (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 56,
   "name": "SAT_HL_Set",
   "description": "Set supply air high limit setpoint (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 57,
   "name": "SAT_CTR_Set",
   "description": "Set supply air neutral setpoint (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 58,
   "name": "SAT_LL_Set",
   "description": "Set supply air low limit setpoint (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 59,
   "name": "Eff_SAT",
   "description": "Effective supply air calc. setpoint (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 60,
   "name": "ComprLockout",
   "description": "Compressor Lockout (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 65,
   "name": "EconoMin_Pos",
   "description": "Eco min position (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 66,
   "name": "EconoMaxCO2Pos",
   "description": "Econo max position (for CO2) (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 67,
   "name": "OATheatOutAuth",
   "description": "Heating authorization (from OAT) (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 68,
   "name": "OATeconOutAuth",
   "description": "Economizer authorization (from OAT) (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 75,
   "name": "OAH",
   "description": "Outside air humidity (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 76,
   "name": "OAE",
   "description": "Outside air enthalpy (range 10-55 BTU/lbs)",
   "units": "BTU/lb",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 77,
   "name": "EnthSP",
   "description": "Enthalpy setpoint (range 20-28 BTU/lbs)",
   "units": "BTU/lb",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 78,
   "name": "MATSP",
   "description": "Mixed air temperature for economizer (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 79,
   "name": "MAT",
   "description": "Mixed air temperature (range 0.0-140°F (0.0-60°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 2,
   "name": "OVRSTAT",
   "description": "Occupancy override status",
   "units": "",
   "access": "R",
   "states": "Inactive = Normal, Active = Override"
  },
  {
   "type": "BV",
   "instance": 3,
   "name": "Mot_Det",
   "description": "Motion detection",
   "units": "",
   "access": "R",
   "states": "Inactive = None, Active = Moving"
  },
  {
   "type": "BV",
   "instance": 4,
   "name": "AutogenDesc",
   "description": "Autogenerate I/O descriptions",
   "units": "",
   "access": "W",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "Occ_Sch",
   "description": "System occupancy schedule",
   "units": "",
   "access": "W",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "BV",
   "instance": 7,
   "name": "Freeze_Status",
   "description": "Freeze condition status",
   "units": "",
   "access": "R",
   "states": "Inactive = Normal, Active = Active"
  },
  {
   "type": "BV",
   "instance": 8,
   "name": "Free_CL_Status",
   "description": "Free cooling authorization status",
   "units": "",
   "access": "R",
   "states": "Inactive = No, Active = Yes"
  },
  {
   "type": "BV",
   "instance": 21,
   "name": "EnthalpyAuth",
   "description": "Enthalpy Authorize",
   "units": "",
   "access": "R",
   "states": "Inactive = No, Active = Yes"
  },
  {
   "type": "MV",
   "instance": 1,
   "name": "CFGSens",
   "description": "Remote thermistor 10K",
   "units": "",
   "access": "W",
   "states": "1 = Type 3, 2 = Type 2"
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "AI_RS",
   "description": "Select room temperature input",
   "units": "",
   "access": "W",
   "states": "1 = Intern, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5"
  },
  {
   "type": "MV",
   "instance": 3,
   "name": "MODE",
   "description": "System mode",
   "units": "",
   "access": "W",
   "states": "1 = Off, 2 = Auto, 3 = Cool, 4 = Heat"
  },
  {
   "type": "MV",
   "instance": 4,
   "name": "FAN",
   "description": "Set fan mode",
   "units": "",
   "access": "W",
   "states": "1 = On, 2 = Auto"
  },
  {
   "type": "MV",
   "instance": 5,
   "name": "Eff_Occ",
   "description": "Effective occupancy mode",
   "units": "",
   "access": "R",
   "states": "1 = Occupied, 2 = Unoccup, 3 = TempOcc, 4 = Standby"
  },
  {
   "type": "MV",
   "instance": 6,
   "name": "Occ_Cmd",
   "description": "Occupancy command",
   "units": "",
   "access": "W",
   "states": "1 = Loc-Occ, 2 = Occupied, 3 = Unoccup"
  },
  {
   "type": "MV",
   "instance": 7,
   "name": "CFG_Y1",
   "description": "Set cooling output 1 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed)"
  },
  {
   "type": "MV",
   "instance": 8,
   "name": "CFG_Y2",
   "description": "Set cooling output 2 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed)"
  },
  {
   "type": "MV",
   "instance": 9,
   "name": "CFG_Y3",
   "description": "Set cooling output 3 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On"
  },
  {
   "type": "MV",
   "instance": 10,
   "name": "CFG_Y4",
   "description": "Set cooling output 4 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On"
  },
  {
   "type": "MV",
   "instance": 16,
   "name": "CFG_W1",
   "description": "Set heating output 1 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed), 9 = O (O/B), 10 = B (O/B)"
  },
  {
   "type": "MV",
   "instance": 17,
   "name": "CFG_W2",
   "description": "Set heating output 2 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed), 9 = O (O/B), 10 = B (O/B)"
  },
  {
   "type": "MV",
   "instance": 18,
   "name": "CFG_W3",
   "description": "Set heating output 3 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On"
  },
  {
   "type": "MV",
   "instance": 19,
   "name": "CFG_W4",
   "description": "Set heating output 4 operation",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Off-On"
  },
  {
   "type": "MV",
   "instance": 23,
   "name": "CFG_FAN",
   "description": "Select fan output",
   "units": "",
   "access": "W",
   "states": "1 = BO-1, 2 = BO-2, 3 = AO-1, 4 = AO-2, 5 = BO-1 & AO-1, 6 = BO-1 & AO-2"
  },
  {
   "type": "MV",
   "instance": 27,
   "name": "AI_OAT",
   "description": "Select outside air temp. input",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External"
  },
  {
   "type": "MV",
   "instance": 28,
   "name": "AI_SAT",
   "description": "Select supply air temp. input",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External"
  },
  {
   "type": "MV",
   "instance": 30,
   "name": "AO_ECO",
   "description": "Select economizer output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = BO-5, 3 = BO-6, 4 = BO-7, 5 = AO-1, 6 = AO-2, 7 = AO-3"
  },
  {
   "type": "MV",
   "instance": 32,
   "name": "CFG_EXH",
   "description": "Select power exhaust output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = BO-6, 3 = BO-7, 4 = AO-3, 5 = BO-6 & AO-3, 6 = BO-7 & AO-3"
  },
  {
   "type": "MV",
   "instance": 44,
   "name": "BI_PIR",
   "description": "Select PIR Motion sensor input",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = NO, AI1 (BI), 3 = NC, AI1 (BI), 4 = NO, AI2 (BI), 5 = NC, AI2 (BI), 6 = NO, AI3 (BI), 7 = NC, AI3 (BI), 8 = NO, AI4 (BI), 9 = NC, AI4 (BI), 10 = External, 11 = Intern"
  },
  {
   "type": "MV",
   "instance": 45,
   "name": "BI_SCH_Input",
   "description": "Select schedule input",
   "units": "",
   "access": "W",
   "states": "1 = None (Off), 2 = None (On), 3 = Scheduler, 4 = AI-1, 5 = AI-2, 6 = AI-3, 7 = AI-4, 8 = AI-5, 9 = External"
  },
  {
   "type": "MV",
   "instance": 48,
   "name": "BO_HUM",
   "description": "Select humidifier BO output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = BO-5, 6 = BO-6, 7 = BO-7, 8 = BO-5 & BO-6 (Two stages), 9 = BO-6 & BO-7 (Two stages)"
  },
  {
   "type": "MV",
   "instance": 49,
   "name": "AO_HUM",
   "description": "Select humidifier AO output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AO-1, 3 = AO-2, 4 = AO-3"
  },
  {
   "type": "MV",
   "instance": 52,
   "name": "AI_RH",
   "description": "Select room humidity input",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External, 8 = Intern"
  },
  {
   "type": "MV",
   "instance": 54,
   "name": "AI_SRH",
   "description": "Select supply humidity input",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External"
  },
  {
   "type": "MV",
   "instance": 55,
   "name": "AIC_SRH",
   "description": "Set supply humidity input signal",
   "units": "",
   "access": "W",
   "states": "1 = 0-10V, 2 = 2-10V"
  },
  {
   "type": "MV",
   "instance": 57,
   "name": "OAH_Loc",
   "description": "Outside humidity physical input loc.",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External, 8 = Intern"
  },
  {
   "type": "MV",
   "instance": 58,
   "name": "MAT_Loc",
   "description": "Mixed air temperature sensor loc.",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External"
  },
  {
   "type": "MV",
   "instance": 62,
   "name": "CFGSetp",
   "description": "Room setpoint displayed",
   "units": "",
   "access": "W",
   "states": "1 = Heat SP, 2 = Center, 3 = Cool SP"
  },
  {
   "type": "MV",
   "instance": 65,
   "name": "BO_OCC",
   "description": "Select occupied output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = BO-5, 6 = BO-6, 7 = BO-7, 8 = AO-1, 9 = AO-2, 10 = AO-3"
  },
  {
   "type": "MV",
   "instance": 66,
   "name": "AI1_CFG",
   "description": "Select predefined AI1 logic",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = NSB, 3 = OVR, 4 = FILTER, 5 = SERVICE, 6 = FANSTATUS"
  },
  {
   "type": "MV",
   "instance": 67,
   "name": "AI2_CFG",
   "description": "Select predefined AI2 logic",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = NSB, 3 = OVR, 4 = FILTER, 5 = SERVICE, 6 = FANSTATUS"
  },
  {
   "type": "MV",
   "instance": 68,
   "name": "BO_DEHU",
   "description": "Select dehumidification output",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = BO-5, 6 = BO-6, 7 = BO-7"
  },
  {
   "type": "MV",
   "instance": 70,
   "name": "PB",
   "description": "CFG Heating/cooling proportional band",
   "units": "",
   "access": "W",
   "states": "1 = 3F 1.2C, 2 = 4F 1.7C, 3 = 5F 2.2C, 4 = 6F 2.8C, 5 = 7F 3.3C, 6 = 8F 3.5C, 7 = 9F 5.0C, 8 = 10F 5.6C"
  },
  {
   "type": "MV",
   "instance": 100,
   "name": "HELP_mess",
   "description": "Help message",
   "units": "",
   "access": "R",
   "states": "1 = Normal, 2 = FanLock, 3 = SupplyFrozen, 4 = Service, 5 = Filter, 6 = Rem NSB Ovr"
  },
  {
   "type": "MV",
   "instance": 127,
   "name": "Preset",
   "description": "Select application",
   "units": "",
   "access": "W",
   "states": "1 = RT 2STG, 2 = RT ECON, 3 = HP 2STG, 4 = RT IAQ, 5 = RT MOD, 6 = HP DEH, 7 = HUM-DEH, 8 = RT 3STG, 9 = RT 4STG, 10 = HP 3STG"
  },
  {
   "type": "MV",
   "instance": 200,
   "name": "Brightness",
   "description": "Brightness Control",
   "units": "",
   "access": "W",
   "states": "1 = Low, 2 = Med-Low, 3 = Med"
  },
  {
   "type": "MV",
   "instance": 201,
   "name": "BgColor",
   "description": "Background Color",
   "units": "",
   "access": "W",
   "states": "1 = White, 2 = Orange, 3 = Blue, 4 = Green, 5 = Red"
  },
  {
   "type": "MV",
   "instance": 202,
   "name": "LockTemp",
   "description": "Main Display",
   "units": "",
   "access": "W",
   "states": "1 = Temp, 2 = Setpoint, 3 = Nothing"
  },
  {
   "type": "MV",
   "instance": 203,
   "name": "Language",
   "description": "Language selection",
   "units": "",
   "access": "W",
   "states": "1 = English"
  },
  {
   "type": "MV",
   "instance": 204,
   "name": "Display_Units",
   "description": "Temperature displayed units",
   "units": "",
   "access": "W",
   "states": "1 = C, 2 = F"
  },
  {
   "type": "MV",
   "instance": 205,
   "name": "System_Unit",
   "description": "System/Database Unit",
   "units": "",
   "access": "W",
   "states": "1 = Metric, 2 = Imperial"
  },
  {
   "type": "MV",
   "instance": 221,
   "name": "Radar_Status",
   "description": "Radar_status",
   "units": "",
   "access": "W",
   "states": "1 = Disable, 2 = Enable"
  },
  {
   "type": "MV",
   "instance": 223,
   "name": "Detection_range",
   "description": "Detection_range",
   "units": "",
   "access": "W",
   "states": "Range: 1_m to 7_m"
  },
  {
   "type": "MV",
   "instance": 235,
   "name": "Radar_Freq",
   "description": "pll_frequency_word",
   "units": "",
   "access": "W",
   "states": "Range: Channel 1 to 8"
  },
  {
   "type": "MV",
   "instance": 244,
   "name": "Sensitivity",
   "description": "duty_cycle_repetition_r",
   "units": "",
   "access": "W",
   "states": "1 = Low, 2 = Medium, 3 = High, 4 = very-high"
  },
  {
   "type": "LO",
   "instance": 1,
   "name": "RoomT_Cool",
   "description": "Room temp cooling control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 2,
   "name": "RoomT_heat",
   "description": "Room temp heating control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 6,
   "name": "SupplyTemp",
   "description": "Supply temp control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 7,
   "name": "SupplyTempHL",
   "description": "Supply temp high limit control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 8,
   "name": "SupplyTempLL",
   "description": "Supply temp low limit control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 10,
   "name": "Room_RH",
   "description": "Room RH control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 11,
   "name": "Supply_RH_HL",
   "description": "Supply RH hi limit control loop",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 12,
   "name": "PidMAT",
   "description": "Mix air T control for economizer",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "SCH",
   "instance": 1,
   "name": "OccSchedule",
   "description": "Occupancy schedule",
   "units": "",
   "access": "W",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/strato-automation/os537-rtu",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}