{
 "manufacturer": "Greystone Energy Systems",
 "manufacturer_slug": "greystone",
 "model": "HN Series humidity / temperature transmitter (BACnet MS/TP)",
 "model_slug": "hn-humidity-temperature-transmitter",
 "aliases": [
  "HN",
  "HNXXXBAC",
  "Greystone HN humidity sensor"
 ],
 "equipment_type": "Humidity / temperature sensor",
 "applies_to": "Greystone HN series humidity and temperature transmitters with BACnet MS/TP and an optional relay.",
 "summary": "The HN is a Greystone RH and temperature transmitter with native BACnet MS/TP. RH and temperature are two Analog Inputs; offsets and the optional relay setpoint, hysteresis and delay are Analog Values, and Binary Values set units, relay test and which reading drives the relay.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": "1.0 (PICS, 16-Sep-20)",
 "default_device_instance": 381001,
 "access_inferred": false,
 "notes": [
  "Points from the object table on page 1 of the setup guide.",
  "The relay objects report a fault when no relay is fitted. AV 3 and AV 4 are in %RH or degrees depending on BV 3.",
  "Object names are as printed, including the spelling \"Relay Hysterisis\".",
  "Access from the PICS: AV and BV Present_Value are writable."
 ],
 "source": {
  "title": "HN Series Humidity/Temperature Transmitter - Setup Guide for BACnet Communication",
  "doc_number": "SG-HNXXXBAC-001",
  "revision_date": "2020-09-16 (PICS date)",
  "url": "https://downloads.greystoneenergy.com/SG/SG-HNXXXBAC-001.pdf"
 },
 "integration": {
  "summary": "Set the MS/TP MAC in the menu, then read RH (AI 1) and temperature (AI 2). The relay settings only matter when the relay option drives local equipment.",
  "minimum_points": [
   {
    "ref": "AI 1",
    "name": "Relative Humidity",
    "why": "Space or duct RH"
   },
   {
    "ref": "AI 2",
    "name": "Temperature",
    "why": "Space or duct temperature"
   },
   {
    "ref": "BI 1",
    "name": "Relay Status",
    "why": "Relay alarm active (option)"
   }
  ],
  "enable": null,
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "Device instance defaults to 381001 (381000 + MAC 1); it stops following the MAC once written over BACnet.",
   "MS/TP baud rates 9600-115200 are supported."
  ],
  "gotchas": [
   "Set BV 3 (relay assignment) before AV 3/AV 4; their units and ranges follow it."
  ]
 },
 "points": [
  {
   "type": "AI",
   "instance": 1,
   "name": "Relative Humidity",
   "description": "Relative humidity, 0-100 %",
   "units": "%RH",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 2,
   "name": "Temperature",
   "description": "Temperature, -40 to 50 °C",
   "units": "°C / °F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1,
   "name": "Humidity Offset",
   "description": "RH offset, ±10 %RH (default 0)",
   "units": "%RH",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "Temperature Offset",
   "description": "Temperature offset, ±5 Δ°C or ±10 Δ°F (default 0)",
   "units": "delta °C / °F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "Relay Setpoint",
   "description": "Relay trip point: 20-90 %RH or 5-40 °C (default 70 %RH)",
   "units": "%RH / °C / °F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 4,
   "name": "Relay Hysterisis",
   "description": "Relay hysteresis: 5-20 %RH or 1-5 °C (default 10 %RH)",
   "units": "%RH / °C / °F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "Relay On Time",
   "description": "Relay on/off delay, 0-255 s (default 0)",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "Temperature Units",
   "description": "Temperature unit select",
   "units": "",
   "access": "W",
   "states": "0=°C, 1=°F"
  },
  {
   "type": "BV",
   "instance": 2,
   "name": "Relay Test",
   "description": "Forces the relay for testing",
   "units": "",
   "access": "W",
   "states": "0=Normal, 1=Test"
  },
  {
   "type": "BV",
   "instance": 3,
   "name": "Relay Assignment",
   "description": "Which reading the relay setpoint uses",
   "units": "",
   "access": "W",
   "states": "0=RH, 1=Temperature"
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "Relay Status",
   "description": "Relay alarm state (relay option)",
   "units": "",
   "access": "R",
   "states": "0=Normal, 1=Alarm"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/greystone/hn-humidity-temperature-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"
}