Shelly Plus Add-On

🧩 Shelly Plus Add-On - Sensor extension module compatible with the Shelly Plus range

Turn your Shelly relays into intelligent environmental controllers with the Shelly Plus Add-On - a compact, galvanically isolated module that allows you to connect sensors for temperature, humidity and other analogue/digital signals. Designed for advanced automation, it is compatible with the entire Shelly Plus range and brings a new level of accuracy and control to your smart home ecosystem.

✨ Key Features:

🌡️ Temperature and humidity monitoring
Connect up to 5 DS18B20 sensors for temperature measurement or one DHT22 sensor for temperature and humidity - perfect for climate control in rooms, greenhouses, greenhouses, greenhouses, servers or technical spaces.

🔌 Multiple inputs for external sensors
Features one digital and one analogue input for integrating other compatible sensors - extend the functionality of Shelly relays in complex projects.

🔁 Dynamic automation based on real-world conditions
Set up scenes that trigger actions based on temperature, voltage or humidity - for example, switch on fans, close blinds or alert when a threshold is exceeded.

🔒 Galvanic isolation for electrical protection
Completely separates external signal circuits from Shelly - increased safety in industrial or sensitive applications.

🔧 Broad compatibility with Shelly Plus
Works with: Shelly Plus 1 / 1PM / 2PM / i4 / i4DC - seamless integration into existing systems.

📐 Technical Specifications:

• Model: Shelly Plus Add-On

• Dimensions: 37 x 42 x 15 mm

• Weight: 105 g

• Housing Material: Plastic, black colour

• Operating temperature: -20 °C to +40 °C

• Humidity: 30% - 70% RH

• Maximum altitude: 2000 m

• Power supply: 3.3V DC (direct power from Shelly Plus)

• Power consumption: < 0.5 W (without sensors)

• Sensor compatibility:

  • DS18B20 (up to 5 pcs.)

  • DHT22 (1 sensor)

• Digital input: -15V to 0.5V (true), 2.5V to 15V (false)

• Analogue input: 0-10V

• Voltmeter reporting threshold: 0.1V

• Analogue reporting threshold: 1%

• Max. currentVDC: 10 mA

• Max. currentVREF OUT: 1 mA

🛠️ With the Shelly Plus Add-On, turn any Shelly Plus relay into a real-time monitoring and feedback centre, ideal for advanced smart home scenarios, commercial applications or automated environmental control systems.