{
 "manufacturer": "Veris",
 "manufacturer_slug": "veris",
 "model": "HD2 Protocol Series duct humidity / temperature sensor",
 "model_slug": "hd2-protocol-humidity-temperature-sensor",
 "aliases": [
  "HD2",
  "HD2 Protocol",
  "HD2XPXXXX",
  "Plant Room Humidity and Temperature Unit",
  "SpaceLogic SHD2",
  "SHD2 Series",
  "GEX55253",
  "GEX55243"
 ],
 "equipment_type": "Duct humidity and temperature sensor",
 "applies_to": "Veris HD2 Protocol Series duct and plant-room humidity/temperature sensors (and the Schneider SpaceLogic SHD2 twin) set to BACnet MS/TP.",
 "summary": "The HD2 Protocol Series is a duct or plant-room humidity and temperature sensor with an RS-485 port for BACnet MS/TP or Modbus. Its BACnet list is three objects: temperature, humidity and a display-units switch for LCD models. It shares object names with the HW2 wall sensor but has none of the HW2 touchscreen objects.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": null,
 "default_device_instance": "Vendor ID + nnn (nnn = MS/TP address)",
 "access_inferred": true,
 "notes": [
  "The objects table has no access column; BV 4 is marked writable from its description.",
  "BV 4 is kept through power outages and applies to LCD models only (as printed).",
  "Schneider SpaceLogic SHD2 Series (guide GEX55243) prints the same table."
 ],
 "source": {
  "title": "HD2 Protocol Series Installation Guide",
  "doc_number": "GEX55253-03",
  "revision_date": "2026-09",
  "url": "https://download.schneider-electric.com/files?p_Doc_Ref=GEX55253"
 },
 "integration": {
  "summary": "Set the MS/TP address and protocol, then read AI 1 and AI 2.",
  "minimum_points": [
   {
    "ref": "AI 1",
    "name": "Room Temperature",
    "why": "Air temperature"
   },
   {
    "ref": "AI 2",
    "name": "Room Humidity",
    "why": "Relative humidity, %"
   }
  ],
  "setup": [
   "Device instance defaults to Vendor ID followed by the MS/TP address; Object_Identifier is writable."
  ],
  "enable": null,
  "heartbeat": null,
  "remote_sensors": null,
  "gotchas": []
 },
 "points": [
  {
   "type": "AI",
   "instance": 1,
   "name": "Room Temperature",
   "description": "Temperature",
   "units": "°C",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "Room Humidity",
   "description": "Relative humidity",
   "units": "%RH",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 4,
   "name": "Temperature Units*",
   "description": "Display units (LCD models)",
   "units": "",
   "access": "W",
   "states": "Active=Fahrenheit; Inactive=Celsius"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/veris/hd2-protocol-humidity-temperature-sensor",
 "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"
}