homebridge-rtl

Homebridge plugin to display information from 433 Mhz sensors, like the Skylink HA-434TL motion sensor or the AcuRite Digital Wireless Fridge and Freezer Thermometer temperature sensor. This plugin uses the RTL_433 package to listen to the sensor in-conjunction with a sdr device to receive the signals from the sensor. In my setup I use this RTL_SDR to receive the radio signal from the sensor.

Supported Sensors

For sensors, I'm using these

Fridge Temperature
Motion

Contributor added sensors:

Mighty Mule Driveway alarm see instructions here

Features

Supported sensors include Motion, Temperature and Humidity
Also shows "not responding" if the sensor stops sending data
For temperature and humidity sensors, has ability to create alarms if the current value exceeds a alarm value

I have tested this on both a Mac and a RPI3

Installation

Install Homebridge using sudo npm install -g homebridge
Install this plugin sudo npm install -g homebridge-rtl
Install RTL_433 following the instructions here
Configure homebridge

Configuration

platform: "rtl_433"
name: "Front Porch" - Name of device for display in the Home App
id: id number of device - To find the ID of your device, run homebridge in DEBUG mode, and it will log the message received from all rtl_433 devices. See below for examples
type: Type of sensor device. Supported sensors are motion, temperature, humidity
alarm: Optional, Create a fake contact sensor called name + Alarm. Value is temperature in Celsius that if exceeded will trigger contact sensor.
humidity: Optional, For devices of type temperature that emits also humidity set to true and humidity will shows in HomeKit/Eve app in the sensor.

Example configuration:

"platforms": [{
    "platform": "rtl_433",
    "devices": [
      {
      "id": "1e3e8",
      "name": "Front Porch",
      "type": "motion"
      }]
  }]

Sample log file entries from homebridge to determine sensor ID

Motion sensor log entries

Message {"time" : "2019-04-03 09:43:05", "model" : "Skylink HA-434TL motion sensor", "motion" : "false", "id" : "1e3e8", "raw" : "5e3e8"}

id is 1e3e8

Temperature sensor log entries

[rtl_433] FYI: Message from unknown device ID 21650
[rtl_433] Message {"time" : "2021-02-02 10:22:30", "model" : "Acurite 986 Sensor", "id" : 21650, "channel" : "1R", "temperature_C" : 20.556, "battery" : "OK", "status" : 0}
[rtl_433] FYI: Message from unknown device ID 21650
[rtl_433] Message {"time" : "2021-02-02 10:22:30", "model" : "Acurite 986 Sensor", "id" : 21650, "channel" : "1R", "temperature_C" : 20.556, "battery" : "OK", "status" : 0}

id is 21650

If the device does not transmit an ID value, will default to channel

Message {"time" : "2020-03-14 11:34:22", "model" : "Philips outdoor temperature sensor", "channel" : 1, "temperature_C" : 1.500, "battery" : "LOW"}

id is the channel 1

Message {"time" : "2020-03-14 14:40:41", "model" : "Acurite tower sensor", "id" : 15424, "sensor_id" : 15424, "channel" : "A", "temperature_C" : 3.600, "humidity" : 60, "battery_low" : 0}

id is 15424

Credits

merbanan - RTL_433 Sensor decoder
simont77 - History Service
matopeto - Humidity Sensor Support

homebridge-rtlHomebridge Plugin for rtl_433 devices