Shelly 2.5

Double relay switch & Roller Shutter




What is Shelly 2.5?

Smaller but more powerful

We developed Shelly 2.5 to have a maximum load of 2x2300W or 2x10A. 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.


  • No HUB required.
  • Wide range of voltage support.
  • Control any 110-230v roller shutter, motorized curtains or awning.
  • Two integrated precise power meters that allow you to measure the consumption for each channel separately.
  • Internal temperature sensor for overheating protection.
  • 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 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
UL Listed option 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

Wiring diagrams

How to connect

Device pinout


Use cases

Roller shutter/blinds/tents/awnings/garage doors/barriers

Often you are in a rush when heading to work, and you want to get there as quickly as possible, or maybe you forgot to close the garage? With Shelly 2.5, you can avoid this, and when going out from home, open and close your garage door with a single tap, or even with your voice. Controlling roller shutters, garage doors, barriers, or any bi-directional motor has never been easier.

Power monitoring

Have comfort at home without using excess energy. With Shelly 2.5, you control your heating or air conditioning while optimizing energy usage with up to 30%. It has integrated precise power metering that lets you measure and be aware of the overall consumption of all the electric appliances. Now you will know if the coffee machine is bumping up your electricity bills, while you are away.

Overheating protection

Overheating is one of the most common problems of loaded electrical devices. When you are away from home, you often leave appliances like your water heater and dishwasher to work. To not worry about fire hazards at home, use Shelly 2.5. With its internal temperature sensor, the device will turn off the circuit if the temperature goes above a dangerous level.

Dual switch

You are getting ready for bed, but start thinking if you have switched off the lights in the kitchen and living room? What about the lights in your hallway? Avoid this and control two independent circuits with one device. Simply place Shelly 2.5 behind the wall switch to control the lighting of two separate lamps. They might be in the same or in different rooms.

Overpower protection

Have you ever placed too many holiday lights, switched on the vacuum cleaner and turned on your heater at the same time, then your lights start dimming and buzzing? Or the switches are warm to the touch? To stay safe and avoid fire hazards due to circuit overloads, install Shelly 2.5, and manage your electricity usage. The device will turn off the circuit immediately if it detects a consumption higher than the predefined one.


Home Automation: Roller Shutters, Lights, Scenes

A guide on how to configure and control your roller shutters and ambient of lights, connected to Shelly 2.5, using Amazon Alexa. If you also have a Shelly Door/Window sensor, you can learn how to define a scene to automatically control roller shutters or lights as a function of day time and main door status.

Learn More

Genius Natural Beer Cooler With Wow Effect Controlled With Shelly Smart Device

Create your very own natural beer cooler easily from drain pipes. The beer will be cooled underneath the earth and with an electrically driven motor it comes up if you want some. The genius beer cooler is controlled by a Shelly wifi switch which can be controlled via Siri or Alexa. Just say: “Siri (or Alexa) bring beer”.

Learn More