Shelly 2.5 WiFi Double Relay

(2 customer reviews)

Out of stock

WiFi-enabled Double Relay Switch with Roller Shutter mode. Control a wide range of electrical appliances, circuits such as office equipment, lights, power outlets, garage doors, curtains, security systems, fans, heaters and much more.  Connect from anywhere with the smallest WiFi-operated double relay switch in the world.

Quality designed and small enough to fit into most standard electrical housings, it also comes with overload and temperature protection.

Monitor and manage your energy consumption with in-built power monitoring feature. Shelly 2.5 also supports smart control of most roller shutters, garage doors, barriers or any bi-directional motor.

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$32.70 $43.50

Out of stock

  • The Shelly 2.5 Dual WiFi Relay Switch has a maximum load of 2 x 2300W or 2 x 10A. Independent dual power metering for each channel allowing you to monitor the status and history, as well as the current and past electrical power consumption. Shelly may work as a standalone device managed by the provided app or as an accessory to another smart hub controller in home automation solutions. For added features such as countdown timer, scenes, schedules plus more.
  • The Shelly 2.5 can also work as a standalone device or as an accessory to a home automation controller.
  • The Shelly 2.5 can support 2 power supply configurations: 110-240V AC and 24-60V DC, see Specification tab for pin and wiring instructions.

Installation Requirements

Under Australian regulations governing electrical safety, these devices are required to be installed by a licensed electrician.

This device requires a neutral line to operate when powering with AC.

Smart Home

Shelly Cloud

A powerful, user-friendly native app which allows you to control your home from anywhere. Each Shelly can be integrated and can work with other Shelly devices in the Shelly app.

Voice Assistant

Shelly products are compatible with the voice assistants Alexa, Google Home, iOS, allowing you to control your devices and appliances with your voice.


Shelly products support industry recognised protocols in directly communicating with your Shelly device: MQTT and REST.

Smart Hubs

Shelly products can be integrated with a variety of smart hub platforms that offer more complex home automation routines and functionality to manage your smart home.





Shelly 2.5 – AU/NZ Compliance Certificate

About Shelly

Shelly® is a family of innovative Devices, which allow remote control of electric appliances through mobile phone, PC or home automation system. Shelly® uses WiFi to connect to the devices controlling it. They can be in the same WiFi network or they can use remote access (through the Internet). Shelly® may work standalone, without being managed by a home automation controller, in the local WiFi network, as well as through a cloud service, from everywhere the User has Internet access. Shelly® has an integrated web server, through which the User may adjust, control and monitor the Device.

SKU: SCS-SHLY-25 Category:
Technical Specifications
Power supply AC 110-230V ±10%, 50/60Hz
Power supply DC 24 – 60V
Dry contacts No
Roller shutter mode Yes
Device temperature protection Yes
Overload protection Yes
Power measurement Yes
Working without a neutral line No
Channels 2 Channel
Maximum load 10A per channel
Operational temperature -40 to + 40 °C
Device power consumption < 1 W
Intelligent On/Off Yes
Local and remote control Yes
Sunrise/Sunset Yes
Weekly Schedule Yes
SAA Certified Yes
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 39mm x 36mm x 17 mm

Pinout & Wiring Diagrams







Shelly 2.5 comes with a programming/debug header which can be used to flash alternative firmware on the device. It has an ESP8266 inside, with a 2MB flash chip. A USB-to-UART adapter is needed as well as a reliable 3.3V with at least 350 mA drive capability.

User Guide

Shelly 2.5 – User Guide

Based on 2 reviews

5.0 overall

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  1. Andrew

    Product exactly as expected. Great service


  2. Sankalp S

    Can be mounted behind switch or in the junction box at the fixture. They integrate easily with Alexa and have an add-on in home assistant now that allows for easy local control. Love the product!

    Sankalp S