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SHELLY - 3 channels DIN rail relay switch with Wi-Fi (dry contact)




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Professional 3 channels relay with Wi-Fi, LAN, and Bluetooth connection, suitable for home and facility automation with remote control.

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Professional 3 channels relay with Wi-Fi, LAN, and Bluetooth connection, suitable for home and facility automation with remote control and precise power management.

DIN rail mountable inside a breaker box. Enhanced safety features and compatible with most used home automation platforms.

Wide variety of appliances control

Suitable for garage doors, lights and appliances on different phases, pumps, heaters, irrigation, and many more.

Dry Contacts

Use a wide range of output voltage levels. Supports low voltages.

Mobile App Control

Turn appliances on/off directly from your smartphone or tablet.

Wi-Fi and LAN connection

LAN connection for high security and ratability. Simultaneous Wi-Fi and LAN usage, as back up when needed.


Add devices quickly and easy via Bluetooth connection, using Shelly Cloud App.

Home assistant compatible

Control your appliance with your voice. Shelly Pro 3 is Google Home and Amazon Echo compatible.

Weekly Scheduling

Create custom daily schedules for your devices.

Following the Sunlight

Shelly Pro 3 can automatically turn on/off based on the sunrise and sunset hours.

3 channels relay switch

3 outputs, 16A each, total device maximum of 48A.

Free Cloud

All you need to manage your Shelly Pro 3 is a smartphone and the Shelly Cloud free mobile application

Countdown timer

No more forgotten turned on appliances. The integrated count- down timer can automatically switch off your oven after an hour.


  • LAN, Wi-Fi, and Bluetooth connection
  • 3 outputs, 16A each. Total device maximum of 48A
  • Dry contact
  • DIN rail mountable
  • Extremely fast processor – ESP32
  • Enhanced safety – Overpower, overvoltage and over-temperature protection
  • Enhanced security - MQTT and WSS support, TLS and custom certificates support
  • Improved API interface
  • May be controlled by an external button/switch
  • Compatible with Google Home and Amazon Echo
  • Power supply: 110-230V ±10% 50/60Hz AC
  • Number of channel: 3
  • Max load per channel: 16A
  • Max load total: 48A
  • Electrical consumption: <3 W
  • Radio signal power: 1mW
  • Wireless/WiFi Protocol: 802.11 b/g/n (2.4 GHz)
  • Frequency: 2400 – 2484 MHz
  • Operational range (depending on local construction):
    • up to 50 m outdoors
    • up to 30 m indoors
  • Working temperature: -20 to 40°C
  • Dimensions (H x W x L): 96 x 53 x 59 mm