Galvanically isolated sensor interface enables safe and reliable sensor integration
Supports up to five DS18B20 temperature sensors or one DHT22 humidity sensor for multi-parameter monitoring
Dual analog and digital inputs allow flexible use with various sensors and automation scenarios
High compatibility with Arduino and most smart home platforms for easy integration
Remote monitoring and automation via Shelly Smart Control app for convenient device management
Summarized by Shop
Shelly Plus Add-on: Galvanically Isolated Sensor Interface
The Shelly Plus Add-on is a galvanically isolated sensor interface designed for seamless integration with Shelly Plus and Gen3 devices. It expands the functionality of Shelly controllers by adding analog, digital, and 1-Wire sensor support — ideal for applications that require pre
Power Supply
AC N.A. or DC 3.3 V (from Shelly Plus device)
Consumption
0.5 W (without sensor)
Maximum Output Current
10 mA (VCC), 1 mA (Vref OUT)
Dimensions
37 x 42 x 15 mm (1.46 x 1.65 x 0.59 in)
Weight
105 g (3.70 oz)
Material
Plastic
Color
Black
Summarized by Shop
4.7
6 ratings
5
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3
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1
Shelly Plus Add-On
C
Customer · July 7, 2026
Great device and very versatile. Quite simple to program via the app.
R
Robert · January 23, 2026
Shelly add-ons are great
This is a must have for anyone needing extra data or sensors. Super simple setup once you have read the documentation. I wish I had more data to collect.