Shelly 1

Single-channel relay




What is Shelly 1?

The most intelligent device

We developed Shelly 1 with an integrated WEB interface for device management and a secure OTA update. You can set your weekly schedules for On/Off without the need of any additional equipment. Shelly 1 knows your location, gives you high security and provides device access control.


  • No HUB required.
  • Wide range of voltage support.
  • Dry contacts.
  • 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 12V, 24 – 60V
Dry contacts Yes
Roller shutter mode No
Device temperature protection No
Overload protection No
Power measurement No
Working without neutral line No
Channels 1 Channel
Maximum load 16A
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
Radio frequency 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 41mm x 36mm x 17mm

Wiring diagrams

How to connect

Device pinout


Use cases

Lighting control

Are you about to watch a movie, all set up on the sofa with popcorn in your lap? Or maybe you are going to bed and need to switch off all the lights, so annoying. To avoid these unpleasant situations, install Shelly 1 at home, and you will be able to control your lights with just one tap via your smartphone, or with your voice. With the compact size of Shelly 1 you can make any light switch smart for less than $15.

High current switch

There is nothing impossible for Shelly 1. With it, you can automate almost any appliance, even those that require high current. It may control an electrical circuit up to 3.5 kW and appliances with up to 16A. Create schedules for when your TV turns On/ Off. Or choose when your pre-loaded washing machine and dishwasher work depending on the best time of use with optimized energy rates.

Garage door control

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 1 you can avoid all this, and when leaving home, you can easily open and close your garage door without worrying that you may have left it open. Shelly 1 has operation voltages of 12V and 24-60V DC, which allows the control of most garage doors on the market.

Irrigation system

Having a perfectly green and beautiful yard is often a hard task that requires a lot of maintenance. With Shelly 1’s ability to have automated garden sprinklers, on a weekly-scheduled basis, you can be sure that your grass will always be well watered. Another extremely convenient feature of the device is that it allows you to follow the position of sun and water your garden after sunset to avoid getting your grass or flowers burnt.

Door bell notification

Often, when you are at home and getting ready because friends will come over, you do various things at the same time and miss out when your guests have arrived? Or maybe the postman had a parcel for you, but you didn’t hear the bell? To avoid these situations, Shelly 1 allows you to connect it to your doorbell and receive an instant notification when someone is at the front door.

Door lock control

You are all set up for the day, and in a rush for work. Halfway to your office, you start hesitating if you have locked the door or not. Sounds familiar? Shelly 1 lets you manage your door lock with just one click for convenience and security. With the Shelly Cloud app, you can lock and unlock your door remotely, so whatever happens, you will be at peace, knowing your home is safe.

Integration in appliances

Cooking a perfect meal for dinner is sometimes a challenge as you have to turn on the oven, the kitchen hood, and go from one end of the kitchen to the other. Forgetting about your laundry and letting it soak is not pleasant too. With Shelly 1, you can control a wide range of home appliances. You will be able to turn them On/Off through your mobile phone and receive notifications when your meal is cooked, or laundry is done.

Motion sensor with light control

Garden walks in the evening help you relax, think more clearly after a busy day, and with Shelly 1, you won’t have to come back to the switch to turn on the lights. With the potential free relay input of Shelly 1 and a motion detector, you may use it as a motion detection switch for your outdoor lights. Wandering around your garden has never been more careless and pleasant.


Living room automation with Shelly & Google Home

How to create very simple automation using google home routines to make your living room all set for a comfortable movie night.

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Creating a Smart Fireplace Switch With A Shelly Relay

“Ok Google, turn on my fireplace” sounds both exciting and scary. Creating a smart fireplace switch with $15 only and a little bit of time.

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Enable Shelly Lights to Follow Music

A guide on how to develop your own application using Shelly 1 and the REST interfaces. When you configure all lights correctly and the REST interfaces are accessible, you will be able to make your lights follow sounds.

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How to wire Shelly 1 on intercom lock

Learn how you can open the front door of your house to delivery workers and much more by hooking a Shelly 1 on your door lock.

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Tub water check and automatic filling with Shelly 1

Use Shelly 1 to automatically check and fill your bathtub at home. The system allows you to view how much water is available inside the tub through the Shelly Cloud app.

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