{
 "manufacturer": "E+E Elektronik",
 "manufacturer_slug": "e-e-elektronik",
 "model": "EE850D / EE820D duct CO2 transmitter (BACnet MS/TP)",
 "model_slug": "ee850d-ee820d-co2-transmitter",
 "short_model": "EE850D / EE820D",
 "aliases": [
  "EE850D",
  "EE820D",
  "EE850",
  "EE820",
  "E+E EE850 BACnet",
  "E+E EE820 BACnet"
 ],
 "equipment_type": "Duct sensor (CO2, humidity, temperature)",
 "applies_to": "E+E EE850 CO2 / humidity / temperature duct transmitters and EE820 CO2 transmitters with the RS485 BACnet MS/TP output.",
 "summary": "The EE850D (CO2, humidity and temperature) and EE820D (CO2 only) are transmitters that work as BACnet MS/TP smart sensors. CO2 comes first in the object list (AI 0-1); the EE850D adds temperature, humidity and the calculated humidity values on AI 2-9.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "1.0",
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "Object list from the PICS sections 11-12 (dated 03.07.2018). The EE820D has only AI 0 and AI 1.",
  "The object order differs from the EE800D room transmitter: CO2 is AI 0 here.",
  "The transmitter-difference table heads both columns EE850D; the second column (CO2 only) is the EE820D per the object list.",
  "All objects are read-only except Present_Value while Out_Of_Service is true."
 ],
 "source": {
  "title": "BACnet PICS EE850D & EE820D",
  "doc_number": "PICS_EE850D_EE820D v1.1",
  "revision_date": "03.07.2018",
  "url": "https://www.instrumart.com/assets/ee-ee820-co2-transmitter-bacnet-protocol-implementation.pdf",
  "unofficial": true,
  "host": "Instrumart"
 },
 "integration": {
  "summary": "Set a unique device instance and MAC address, then poll AI 0 for CO2. On the EE850D also read temperature (AI 2) and humidity (AI 3).",
  "minimum_points": [
   {
    "ref": "AI 0",
    "name": "CO2",
    "why": "CO2, averaged"
   },
   {
    "ref": "AI 2",
    "name": "T",
    "why": "Temperature (EE850D only)"
   },
   {
    "ref": "AI 3",
    "name": "RH",
    "why": "Relative humidity (EE850D only)"
   }
  ],
  "enable": null,
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "Device instance (0-4194302) and device name are writable and kept in non-volatile memory; the default name is the model plus 8 unique characters.",
   "RS485 settings are one writable string property, default \"9600-8n1\"; baud 9600-115200, 8 data bits, no parity, 1 stop bit fixed.",
   "Max Master is writable, up to 127.",
   "ReinitializeDevice and DeviceCommunicationControl need the password printed in the PICS."
  ],
  "gotchas": [
   "Present_Value is only writable while Out_Of_Service is true; the value then defaults to 50.0.",
   "Default RS485 string is 9600-8n1 here, not 38400 as on other E+E sensors."
  ]
 },
 "points": [
  {
   "type": "AI",
   "instance": 0,
   "name": "CO2",
   "description": "CO2, averaged",
   "units": "ppm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 1,
   "name": "CO2raw",
   "description": "CO2 raw value",
   "units": "ppm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "T",
   "description": "Temperature (EE850D only)",
   "units": "°C / °F / K",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 3,
   "name": "RH",
   "description": "Relative humidity (EE850D only)",
   "units": "%rH",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 4,
   "name": "e",
   "description": "Water vapor partial pressure (EE850D only)",
   "units": "mbar / psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 5,
   "name": "Td",
   "description": "Dew point temperature (EE850D only)",
   "units": "°C / °F / K",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 6,
   "name": "dv",
   "description": "Absolute humidity (EE850D only)",
   "units": "g/m³ / g/ft³",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 7,
   "name": "r",
   "description": "Mixing ratio (EE850D only)",
   "units": "g/kg / gr/lb",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 8,
   "name": "h",
   "description": "Enthalpy (EE850D only)",
   "units": "kJ/kg / ft·lbf/lb / BTU/lb",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 9,
   "name": "Tf",
   "description": "Frost point temperature (EE850D only)",
   "units": "°C / °F / K",
   "access": "R",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/e-e-elektronik/ee850d-ee820d-co2-transmitter",
 "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"
}