Heelight Relay

longan, heelight, relay, IoT, lamp, smart, sound, voice, light, Heelight Relay,

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Heelight Relay is uniquely designed to control a relay using digital sound commands over a distance of about 10 meters. It is built with the Heelight Core (https://longan-labs.cc/heelight-core/), a smart sound sensor that can recognize up to 500+ digital sound commands.
Simply, you can now turn on and off lamps, fans, solenoids, and other small appliances that run on up to 220VAC or DC power by playing a sound with your smartphone, computer, or any audio player. 
The Heelight Relay is integrated with an STM32 Arm Cortex microcontroller, pre-programmed for digital sound recognition during the manufacturing of this module hence doesn't require any further programming to process the digital sound commands. The module can be configured to response for a digital sound command using the built-in two momentary push buttons.

We can control the relay through a sound command. We offer an App to make the sound commands. With a set sound command, the relay on the module can be opened or closed. Heelight Relay can set different voice commands, you don't need to programm the board, just press the button is enough. The sound command is valid in the range of 10 meters, which allow you to open the lamp when you are out of the door.

What are you waiting for, join us to change the world with sound!


  • 220V/5A

  • 10 meters available

  • App to control

  • 2 User Button

  • 5V Barrel Jack input

  • 5mm Terminal Relay output


This product was designed by Longan Labs, click to get more awesome products.

Please feel free to contact [email protected] if you need techsupport.

Technical details

Dimensions 110mm x85mm x45mm
Weight G.W 81.5g
Battery Exclude

Part List

Heelight Relay Module 1
Screw 1
USB-Barrel Jack cable 1


HSCODE 8538900000
USHSCODE 8536411000




Heelight relay provides many ways to contrl a relay. You can control your lamp or other appliances via the sound command.



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