{
 "manufacturer": "Strato Automation",
 "manufacturer_slug": "strato-automation",
 "model": "OPENSTAT OS537 thermostat, FCU firmware",
 "model_slug": "os537-fcu",
 "aliases": [
  "OS537",
  "OS537H",
  "OS537MHC",
  "OpenStat OS537",
  "OS537-FCU",
  "Strato OS537"
 ],
 "equipment_type": "Thermostat (BACnet MS/TP)",
 "applies_to": "Strato OS537 thermostats running the 2-pipe / 4-pipe fan coil application of the universal firmware.",
 "summary": "In its fan coil application the OS537 drives on/off, floating or 0-10 V valves, a three-speed or ECM fan and an auxiliary output (reheat, occupancy, fan or network-controlled) over BACnet MS/TP. The object list has setpoints, mode, fan and occupancy commands, door, window, filter and service inputs, changeover and fan status, demands and two PID loops.",
 "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).",
  "AI-2 is printed in the I/O table without a row border and was read from the page text.",
  "AI-8 RoomCO2 exists only on C models such as the OS537MHC.",
  "BV-14 Aux_Cmd drives the auxiliary output when MSV-54 is set to Network.",
  "Multistate state numbers follow the order the states are printed, starting at 1; several MSVs print a range instead.",
  "MSV-48 prints 'COC/NH' for both changeover contact options; the second is described as normally cool."
 ],
 "source": {
  "title": "OS537 (Universal Firmware) User Guide, Fan Coil Unit (FCU) - 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": "Command system mode (MSV-16), fan mode (MSV-17) and occupancy (MSV-6) and write the room setpoint (AV-1). Read room temperature, demands, fan status and the door, window, filter and service status points.",
  "minimum_points": [
   {
    "ref": "MV 16",
    "name": "MODE",
    "why": "System mode: Off, Auto, Cool, Heat"
   },
   {
    "ref": "MV 17",
    "name": "FAN",
    "why": "Fan mode: Lo, Med, Hi, Auto"
   },
   {
    "ref": "MV 6",
    "name": "Occ_Cmd",
    "why": "Occupancy command: local, occupied, unoccupied"
   },
   {
    "ref": "AV 1",
    "name": "RoomTSP",
    "why": "Room temperature setpoint"
   },
   {
    "ref": "AI 6",
    "name": "RoomT",
    "why": "Room temperature"
   },
   {
    "ref": "MV 5",
    "name": "Eff_Occ",
    "why": "Effective occupancy"
   },
   {
    "ref": "AV 21",
    "name": "HTG_Dem",
    "why": "Heating demand, %"
   },
   {
    "ref": "AV 22",
    "name": "CLG_Dem",
    "why": "Cooling demand, %"
   },
   {
    "ref": "BV 15",
    "name": "FanStat",
    "why": "Fan running status"
   },
   {
    "ref": "MV 100",
    "name": "HELP_mess",
    "why": "Alarm message: Service, Filter, Window"
   }
  ],
  "enable": "MSV-6 Occ_Cmd (tagged Cmd) sets occupancy from the BMS; BV-14 Aux_Cmd switches the auxiliary output when MSV-54 = Network.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "MS/TP address and baud are set in the MSTP Config menu.",
   "Strato recommends writing MSVs and AVs at the default priority (16) and everything else at priority 8 down to 3."
  ],
  "gotchas": [
   "MSV-52 (pipes), MSV-15 (sequence), BV-75 (valve type) and MSV-58 (fan sequence) are commissioning settings."
  ]
 },
 "points": [
  {
   "type": "BO",
   "instance": 1,
   "name": "BO_1",
   "description": "Binary output 1",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 2,
   "name": "BO_2",
   "description": "Binary output 2",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 3,
   "name": "BO_3",
   "description": "Binary output 3",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 4,
   "name": "BO_4",
   "description": "Binary output 4",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 5,
   "name": "BO_High",
   "description": "High-speed fan output",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 6,
   "name": "BO_Med",
   "description": "Medium-speed fan output",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 7,
   "name": "BO_Low",
   "description": "Low-speed fan output",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 1,
   "name": "AO_ECM",
   "description": "Fan ECM output; dependent on MSV-58",
   "units": "",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 2,
   "name": "AO_2",
   "description": "Analog output 2",
   "units": "%",
   "access": "C",
   "states": ""
  },
  {
   "type": "AO",
   "instance": 3,
   "name": "AO_3",
   "description": "Analog output 3",
   "units": "%",
   "access": "C",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 1,
   "name": "AI_1",
   "description": "Analog input 1; dependent on MSV-46",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 3,
   "name": "AI_3",
   "description": "Analog input 3; dependent on MSV-48",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 4,
   "name": "AI_4",
   "description": "Remote room sensor",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 5,
   "name": "AI_5",
   "description": "Unused",
   "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": "Off / Active"
  },
  {
   "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": 7,
   "name": "Eff_T",
   "description": "Effective temperature used for control (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "OATemp",
   "description": "Outdoor air temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "SATemp",
   "description": "Supply air temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "CHOV_T",
   "description": "Changeover temperature (range -40-122°F (-40-50°C))",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "HTG_Dem",
   "description": "Heating demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "CLG_Dem",
   "description": "Cooling demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "Fan_HT__Demand",
   "description": "Fan heating demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 24,
   "name": "Fan_CL__Demand",
   "description": "Fan cooling demand (range 0-100%)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "ECM_Min",
   "description": "ECM minimum speed output (range 0-100%)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "OvrTime_Set",
   "description": "Set occupancy override time (range 15 – 480 min)",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 28,
   "name": "MotionOvrTime_Set",
   "description": "Motion Set occupancy override time (range 1 – 60 min)",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 30,
   "name": "EffHTSP",
   "description": "Effective heating setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "EffCLSP",
   "description": "Effective cooling setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 39,
   "name": "OccHTSP",
   "description": "Occupied heating setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 40,
   "name": "OccCLSP",
   "description": "Occupied cooling setpoint",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "STBHTSP",
   "description": "Standby heating setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 42,
   "name": "STBCLSP",
   "description": "Standby cooling setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 43,
   "name": "Unoc_HT_SP",
   "description": "Unoccupied heating setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 44,
   "name": "Unoc_CL_SP",
   "description": "Unoccupied cooling setpoint",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 50,
   "name": "RT_Cal",
   "description": "Room temperature calib (range -5 to 5)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 58,
   "name": "MaxHTSP",
   "description": "Maximum heating setpoint (range 40-90°F (4.5-32°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 59,
   "name": "MinCLSP",
   "description": "Minimum cooling setpoint (range 54-100°F (12-37.5°C))",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 63,
   "name": "SP_DB",
   "description": "Setpoint deadband (range 2 to 5)",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 2,
   "name": "OVRSTAT",
   "description": "Occupancy override status",
   "units": "",
   "access": "R",
   "states": "Inactive = Normal, Active = Overrid"
  },
  {
   "type": "BV",
   "instance": 3,
   "name": "Mot_Det",
   "description": "Motion detection",
   "units": "",
   "access": "R",
   "states": "Inactive = None, Active = Moving"
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "OccSch",
   "description": "System occupancy schedule",
   "units": "",
   "access": "R",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "BV",
   "instance": 14,
   "name": "Aux_Cmd",
   "description": "Auxiliary network command",
   "units": "",
   "access": "W",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "BV",
   "instance": 15,
   "name": "FanStat",
   "description": "Fan status",
   "units": "",
   "access": "R",
   "states": "Inactive = Stopped, Active = Running"
  },
  {
   "type": "BV",
   "instance": 25,
   "name": "AuxStat",
   "description": "Auxiliary output status",
   "units": "",
   "access": "R",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "BV",
   "instance": 29,
   "name": "AI1Stat",
   "description": "Analog input 1 binary contact status",
   "units": "",
   "access": "R",
   "states": "Inactive = Deactivated, Active = Activated"
  },
  {
   "type": "BV",
   "instance": 30,
   "name": "AI2Stat",
   "description": "Analog input 2 binary contact status",
   "units": "",
   "access": "R",
   "states": "Inactive = Deactivated, Active = Activated"
  },
  {
   "type": "BV",
   "instance": 31,
   "name": "AI3Stat",
   "description": "Analog input 3 binary contact status",
   "units": "",
   "access": "R",
   "states": "Inactive = Deactivated, Active = Activated"
  },
  {
   "type": "BV",
   "instance": 35,
   "name": "Window",
   "description": "Window detection status",
   "units": "",
   "access": "R",
   "states": "Inactive = Close, Active = Open"
  },
  {
   "type": "BV",
   "instance": 36,
   "name": "Filter",
   "description": "Filter sensor status",
   "units": "",
   "access": "R",
   "states": "Inactive = Normal, Active = Alarm"
  },
  {
   "type": "BV",
   "instance": 37,
   "name": "ServALM",
   "description": "Service alarm status",
   "units": "",
   "access": "R",
   "states": "Inactive = Normal, Active = Alarm"
  },
  {
   "type": "BV",
   "instance": 38,
   "name": "Door",
   "description": "Door detection status",
   "units": "",
   "access": "R",
   "states": "Inactive = Close, Active = Open"
  },
  {
   "type": "BV",
   "instance": 40,
   "name": "Ch_Over",
   "description": "Change over status",
   "units": "",
   "access": "R",
   "states": "Inactive = Cool, Active = Heat"
  },
  {
   "type": "BV",
   "instance": 50,
   "name": "AutoMod",
   "description": "Auto mode authorized",
   "units": "",
   "access": "W",
   "states": "Inactive = No, Active = Yes"
  },
  {
   "type": "BV",
   "instance": 64,
   "name": "Reh_Opt",
   "description": "Reheat control option",
   "units": "",
   "access": "W",
   "states": "Inactive = Pulse1S, Active = On-Off"
  },
  {
   "type": "BV",
   "instance": 66,
   "name": "KeepFan",
   "description": "Fan auto mode",
   "units": "",
   "access": "W",
   "states": "Inactive = Fan Low, Active = Fan Off"
  },
  {
   "type": "BV",
   "instance": 75,
   "name": "VALVCTL",
   "description": "Valve motor control type",
   "units": "",
   "access": "W",
   "states": "Inactive = On-Off, Active = Floating"
  },
  {
   "type": "BV",
   "instance": 78,
   "name": "AO2_Dir",
   "description": "AO2 action",
   "units": "",
   "access": "W",
   "states": "Inactive = Direct, Active = Reverse"
  },
  {
   "type": "BV",
   "instance": 79,
   "name": "AO3_Dir",
   "description": "AO3 action",
   "units": "",
   "access": "W",
   "states": "Inactive = Direct, Active = Reverse"
  },
  {
   "type": "BV",
   "instance": 200,
   "name": "LockStPoint",
   "description": "Lock Setpoint",
   "units": "",
   "access": "W",
   "states": "Inactive = Unlock, Active = Lock"
  },
  {
   "type": "BV",
   "instance": 201,
   "name": "LockMode",
   "description": "Lock Mode",
   "units": "",
   "access": "W",
   "states": "Inactive = Unlock, Active = Lock"
  },
  {
   "type": "BV",
   "instance": 202,
   "name": "LockFan",
   "description": "Lock Fan",
   "units": "",
   "access": "W",
   "states": "Inactive = Unlock, Active = Lock"
  },
  {
   "type": "BV",
   "instance": 203,
   "name": "WifiStatus",
   "description": "Wifi Status",
   "units": "",
   "access": "R",
   "states": "Inactive = Off, Active = On"
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "Tsource",
   "description": "Temperature input location",
   "units": "",
   "access": "W",
   "states": "1 = AutoDet, 2 = Intern, 3 = AI-4"
  },
  {
   "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": 15,
   "name": "SeqOper",
   "description": "Control sequence of operation",
   "units": "",
   "access": "W",
   "states": "1 = Cooling, 2 = Heating, 3 = Cool-Rt, 4 = Heat-Rt, 5 = Cl-Ht"
  },
  {
   "type": "MV",
   "instance": 16,
   "name": "MODE",
   "description": "System mode",
   "units": "",
   "access": "W",
   "states": "1 = Off, 2 = Auto, 3 = Cool, 4 = Heat"
  },
  {
   "type": "MV",
   "instance": 17,
   "name": "FAN",
   "description": "Fan mode",
   "units": "",
   "access": "W",
   "states": "1 = Lo, 2 = Med, 3 = Hi, 4 = Auto"
  },
  {
   "type": "MV",
   "instance": 19,
   "name": "KeyLock",
   "description": "Keypad lock level",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Fan, 3 = Mode, 4 = FanMode, 5 = All"
  },
  {
   "type": "MV",
   "instance": 26,
   "name": "BO3_BO4",
   "description": "BO3/BO4 status",
   "units": "",
   "access": "R",
   "states": "1 = Stopped, 2 = Open, 3 = Close"
  },
  {
   "type": "MV",
   "instance": 27,
   "name": "BO1_BO2",
   "description": "BO1/BO2 status",
   "units": "",
   "access": "R",
   "states": "1 = Stopped, 2 = Open, 3 = Close"
  },
  {
   "type": "MV",
   "instance": 28,
   "name": "FanStat",
   "description": "Fan status",
   "units": "",
   "access": "R",
   "states": "1 = Off, 2 = Low, 3 = Med, 4 = High"
  },
  {
   "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 = NO, AI5 (BI), 11 = NC, AI5 (BI), 12 = External, 13 = 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": 47,
   "name": "AI2_CFG",
   "description": "CFG Analog input 2",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Overrid (remote override switch), 3 = Filter, 4 = Service"
  },
  {
   "type": "MV",
   "instance": 48,
   "name": "AI3_CFG",
   "description": "CFG Analog input 3",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = COC/NH (Normally Heat ChangeOver Contact), 3 = COC/NH (Normally Cool ChangeOver Contact), 4 = COS (ChangeOver Sensor), 5 = SS (Supply sensor remote monitoring 10K type 3 sensor)"
  },
  {
   "type": "MV",
   "instance": 49,
   "name": "Door_Loc",
   "description": "Door contact input location",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5"
  },
  {
   "type": "MV",
   "instance": 51,
   "name": "Windows_Loc",
   "description": "Window contact input location",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5"
  },
  {
   "type": "MV",
   "instance": 50,
   "name": "AI5_CFG",
   "description": "CFG Analog Input 5",
   "units": "",
   "access": "W",
   "states": "1 = None, 2 = Fan Lock"
  },
  {
   "type": "MV",
   "instance": 52,
   "name": "PipeNum",
   "description": "Pipe number",
   "units": "",
   "access": "W",
   "states": "1 = 2 Pipes, 2 = 4 Pipes"
  },
  {
   "type": "MV",
   "instance": 54,
   "name": "Aux_CFG",
   "description": "Auxiliary output configuration",
   "units": "",
   "access": "W",
   "states": "1 = Reheat, 2 = Occ-NO, 3 = Occ-NC, 4 = Fan-NO, 5 = Fan-NC, 6 = Network (Can be controlled by BACnet)"
  },
  {
   "type": "MV",
   "instance": 55,
   "name": "Reheat",
   "description": "Reheat type",
   "units": "",
   "access": "W",
   "states": "1 = Basebrd, 2 = Coil"
  },
  {
   "type": "MV",
   "instance": 58,
   "name": "Fan_Seq",
   "description": "Control fan sequence",
   "units": "",
   "access": "W",
   "states": "1 = L-M-H, 2 = L-H, 3 = L-M-H-A, 4 = L-H-A, 5 = On-Auto (Single speed or 0-10Vdc)"
  },
  {
   "type": "MV",
   "instance": 65,
   "name": "PB",
   "description": "Heating/Cooling proportional band",
   "units": "",
   "access": "W",
   "states": "Range: 3 F (1.2 C) - 10 F (5.6 C)"
  },
  {
   "type": "MV",
   "instance": 70,
   "name": "Display_SP",
   "description": "Setpoint displayed for user",
   "units": "",
   "access": "W",
   "states": "1 = Heating, 2 = Center, 3 = Cooling"
  },
  {
   "type": "MV",
   "instance": 75,
   "name": "BO3Time",
   "description": "BO3/BO4 travel time for 3 states valve",
   "units": "",
   "access": "W",
   "states": "Range: 0.5 min - 6 min"
  },
  {
   "type": "MV",
   "instance": 76,
   "name": "BO1Time",
   "description": "BO1/BO2 travel time for 3 states valve",
   "units": "",
   "access": "W",
   "states": "Range: 0.5 min - 6 min"
  },
  {
   "type": "MV",
   "instance": 77,
   "name": "CL_CPH",
   "description": "Cooling output cycle per hour",
   "units": "",
   "access": "W",
   "states": "Range: 3 - 8 CPH"
  },
  {
   "type": "MV",
   "instance": 78,
   "name": "HT_CPH",
   "description": "Heating output cycle per hour",
   "units": "",
   "access": "W",
   "states": "Range: 3 - 8 CPH"
  },
  {
   "type": "MV",
   "instance": 100,
   "name": "HELP_mess",
   "description": "Help message",
   "units": "",
   "access": "R",
   "states": "1 = Normal, 2 = Service, 3 = Filter, 4 = Window"
  },
  {
   "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": "MainDisplay",
   "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": "PIDZoneCool",
   "description": "PID Zone cooling",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "LO",
   "instance": 2,
   "name": "PIDZoneHeat",
   "description": "PID Zone heating",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "SCH",
   "instance": 1,
   "name": "OccSchedule",
   "description": "Occupancy schedule",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "AI_2",
   "description": "Analog input 2; dependent on MSV-47",
   "units": "",
   "access": "R",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/strato-automation/os537-fcu",
 "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"
}