Nexus 433MHz Home Assistant Integration

This project contains a Home Assistant integration for 433MHz wireless temperature and humidity sensors based on the Nexus protocol.

Receiving of the sensor's wireless signals is via a CC1101 radio connected via SPI, using the CC1101 Linux Driver and Python interface.

The Nexus protocol implementation is based on the rtl_433 decoder.

Devices

The integration has been tested using the Bresser 7000020 sensors. According to the rtl_433 decoder, the following devices should also be supported:

• FreeTec (Pearl) NC-7345
• infactory/FreeTec (Pearl) NX-3980
• Solight TE82S
• TFA 30.3209.02

Sample Configuration

nexus:
  device: /dev/cc1101.0.0

sensor:
  - platform: nexus
    sensors:
    - name: Garage
      channel: 1
    - name: Inside
      channel: 2
    - name: Outside
      channel: 3