Shelly Uni

Make any old appliance smart

What is Shelly Uni?

The Intelligent Wi-Fi operated implant

Make any old appliance smart! Shelly UNI is the smallest universal module with two available digital inputs and potential-free outputs, providing endless functionalities.


  • No HUB required.
  • Wide range of voltage support.
  • 2 digital inputs
  • 2 potential-free outputs
  • ADC range can measure any voltage from 0 to 30 VDC
  • Supports up to 3xDS18B20 temperature sensors or 1Х humidity sensors
  • Transparent insulation cover over the chip protects it from high humidity, dust, and the threat of short circuits
  • Designed to fit in most standard electrical boxes and switches.
  • It can be integrated to work with all other Shelly devices.
  • Compatible with Android, iOS, Amazon Alexa, Google Assistant, and home automation servers using MQTT, CoAP, and REST API.
  • Easily make your Arduino project live and usable in your automation project.


Power supply AC 12V – 24V
Power supply DC 12V – 36V
Inputs 2 Separated digital inputs from 2.2-36V DC and 12-24V AC
Outputs 2 Potential free outputs up to 24VAC and 36VDC, max 100 mA, 300mW each
Overload protection No
Power measurement 1 ADC – dual ranges from 0-12V and 0-30V
Channels 2 Channel
Operational temperature 0 to + 40 °C
Device power consumption < 1 W
Intelligent On/Off Yes
Sunrise/Sunset Yes
Weekly Schedule Yes
UL Listed option No
Wireless/WiFi Protocol 802.11 b/g/n
Radiofrequency 2400 – 2500 MHz
Radio signal power 1mW
Range up to 50 m outdoors and up to 30 m indoors (depending on the building materials)
Size 20mm x 33mm x 13mm

Wiring diagrams

How to connect


  1. Vcc / L – 12V to 36V DC / 12V to 24V AC
  2. N(neutral)
  3. ADC_IN
  4. VCC_SENSOR  – 3,3V
  5. DATA_SENSOR – sensor data pin
  6. GND_SENSOR – sensor GND
  7. IN_1 – first AC/DC input –  AC: 12V to 24V/ DC: 0,6V to 36V
  8. IN_2 – first AC/DC input – AC: 12V to 24V/ DC: 0,6V to 36V


  1. OUT_1 – Maximum current – 100mA,  Maximum voltage –  AC: 24V / DC: 36V
  2. OUT_2 – Maximum current – 100mA,  Maximum voltage –  AC: 24V / DC: 36V

Device pinout