Shelly Plus Add-On
Shelly Plus Add-On is an expansion module for Shelly Plus devices that adds temperature, humidity, analog, and digital input capabilities. Powered directly from the connected Shelly Plus device, it supports up to five DS18B20 temperature sensors or one DHT22 temperature & humidity sensor, enabling advanced monitoring and automation scenarios. Designed for compact installations, Shelly Plus Add-On integrates seamlessly with Shelly Plus relays and input modules to extend sensing and control without additional power supplies.
Key Features
Use Cases
What’s Included
Technical Specifications
Physical
Weight: 105 g
Shell material: Plastic
Colour: Black
Environmental
Humidity: 30% to 70% RH
Max altitude: 2000 m
Electrical
Power supply voltage DC: 3.3 V (from Shelly Plus device)
Power consumption: < 0.5 W (without sensors)
Output Circuit Ratings
VREF OUT max current: 1 mA
VREF + R1 OUT resistor: 10 kΩ
Shelly Plus Device Firmware Capabilities
Temperature reading: Via DS18B20 or DHT22 sensors
Humidity reading: Via DHT22 sensor
Digital input: -15 V to 0.5 V (True) / 2.5 V to 15 V (False)
Analog input range: 0 to 100%
Analog input report threshold: 1%
Voltmeter range: 0 to 10 V
Voltmeter report threshold: 0.1 V
Analog input / voltmeter accuracy: Better than 5%
MQTT: Yes
CoAP: No