SONOFF RE5V1C – 5V wifi inching/selflock relay module


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  • Nano Size 
  • Dry Contact Output
  • Low Power Supply – 5VDC low voltage input
  • 2 Working modes – self-locking and inching mode
  • LAN Control – Turn on/off the device even when WiFi has no Internet access
  • App Support – Free iOS and Android mobile App eWeLink
  • Remote ON/OFF–Turn electrical devices on/off from anywhere
  • Sync Status–Real-time device status provided to App
  • Timing–Set scheduled/countdown timers to turn on/off at specified time
  • Share Control– Control your smart home together with your family
  • Scene–Turn on/off a gang of devices with one tap
  • Smart Scene–Triggered on/off by temp, hum or other environmental conditions from sensor
  • Compatibility –Works perfectly with Amazon Alexa, Google Assistant, IFTTT, Google Nest
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Long story in short, it's a 5V wifi inching/selflock relay module by SONOFF.

Just like a standard SONOFF switch, you can use it to work with eWelink app, Amazon Alexa, Google Home, IFTTT..etc.

The 5VDC input, nano size and dry-contact output makes it different from traditional SONOFF product, there are two working modes for the product: inching mode and self-locking mode. users can switch these two modes on eWeLink app.when the module is switched to the self-locking mode, users can turn on/off the connected appliance instantly. when the module is switched to the inching mode, users can press the ON/OFF toggle button to turn on or off connected devices.

The product enables remote control of home appliances through the mobile application eWeLink, available on both Android and iOS. Supported functions include:

  • Remote turn on/off
  • Timing Schedules
  • Device Sharing
  • Group Management
  • Works with Amazon Echo, Echo Dot, Amazon Tap
  • Works with Google Home, Google Nest
  • Works with IFTTT


  • Power Supply: 5V DC
  • Dry contact output
  • Max Current: 10A
  • Humidity: 5%-90%RH, Non-condensing
  • Operating Temperature: 0ºC-40ºC(32°F-104°F)
  • Nano size: 34.5*25*19mm


  • Supports status tracking: device status is timely provided to eWeLink.
  • Supports max 8 enabled scheduled/countdown/loop timers.
  • Works with Amazon Echo, Echo Dot, Amazon Tap
  • Works with Google Home, Google Home Mini, Google Nest
  • Works with IFTTT


Application Guide: click here.


Additional information

Weight 15 g
Dimensions 34.5 × 25 × 19 mm

Product Type

5V Wi-Fi Inching/Selflock Relay Module

Power Supply


Output Contact Type

Dry contact

Max Current



5%-90%RH, Non-condensing

Operating Temperature


Nano size


Works With

, ,

RE5V1C Bundle

1 PCS, 3 PCS, 5 PCS, 10 PCS

Customer Reviews

Based on 14 reviews
Gergely Szanyi
Working good but can be inproved

I like this little electronics for my DIY projects. It works simple and stabile. I wish it would have a NO/COM/NC relay instead and a solder pad for external push button. It would be an advance if the operating button would be the same side as the relay housing.
I am dremaing about 😉 great projects with possible updated wifi/ZigBee version of it, including switch and push button handling and with 3 volt DC AA/AAA battery power.

Good products

Everything I bought from ITEAD so far worked very well never had problems, cameras, switches, controls and plugs, all smart home products works good and the lifetime for these products excellent, I do recommend these products to be used at homes for quality price.

Awesome product

Working flawlessly!

Steve D
Great relays

Have bought these multiple times now, they have never disappointed me, Work great.

Igor Surini

got several of those devices and they work great! flashed with tasmota ofc


Very impressed. Items arrived on time, easy to set up and have functiond flawlesly.


Es ideal para determinados proyectos.
Pequeño y muy funcional.

David Ruiz
Work perfectly.

Works as advertised. The size is excellent to fit everywhere. But you need to know something about soldering and multimeters to install it. I used it to open my garage door.

Richard Bridgstock

Simple small device, easy to connect and set up. I use one in inch mode to remotely start my Desktop PC so that I can access it with my Laptop when away from home. I use another in inch mode to activate a 12volt lock that opens a small safe.
These were replacements for Arduino UNOs that did the same job with a lot more complications and needed programming.
The pictures below show the complicated Arduino setup compared to the so simple Sonoff that achieves the same result.


Practical, it start air exchanger with motion sensor in bathroom

SONOFF RE5V1C - 5V wifi inching/selflock relay module