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 a neutral line No
Channels 1 Channel
Maximum load Standard version – 16A / UL version – 15A
Operational temperature 0°C 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 go to bed and need to switch off all the lights, so annoying! To avoid this, install Shelly 1 at home, and control your lights with just one tap via your smartphone, or with your voice. With the compact Shelly 1, you can make any light switch smart for less than $15.

Garage door control

Did you forget to close the garage? With Shelly 1, 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 green and beautiful yard is a hard task. With Shelly 1’s ability to have automated garden sprinklers, you can be sure that your grass will always be well watered. Тhe device can also follow the sun and water your garden after sunset to avoid getting your plants burnt.

Door bell notification

Often, when you are at home and doing various things at the same time, you can miss out on the postman or your guests. Avoid these situations with Shelly 1 as it 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 in a rush for work, but 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 remotely. You can lock and unlock it, so whatever happens, you will be at peace, knowing your home is safe.

Motion sensor with light control

Garden walks in the evening help you relax after a busy day, and with Shelly 1, you won’t have to come back to turn on the lights. With 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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Make a dumb doorbell smart with Shelly 1

Make your dumb doorbell really smart and force it to send you notifications and pictures of who is visiting you.

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