4-Channel WiFi Smart Relay – Control 4 independent circuits from your phone, anywhere in the world
Looking to automate multiple electrical circuits with a solution that works even when you’re away from home? This 4-channel Tuya WiFi relay gives you complete control over your lighting, gates, motors, or sockets from a single app. No complex wiring or expensive intermediaries required.
Note: The 433MHz RF remote control is not included, but the device is ready to pair with any compatible 433MHz remote.
Why choose this model? (Key Benefits):
- 4 truly independent channels — each supports up to 10A / 2000W, allowing you to control 4 different circuits simultaneously without interference.
- Dual power supply modes — operates on 85–220V AC or 5V USB, making it versatile enough for installations even where a standard mains socket isn’t available.
- 3 app-configurable modes — Self-locking, Interlock, and Inching (1–3600s), specifically designed for real-world scenarios like gates, reversible motors, or short-pulse triggers.
- Native voice integration — works seamlessly with Amazon Alexa and Google Home without the need for an extra hub, connecting directly via your Tuya account.
- Triple connectivity — 2.4GHz WiFi + Bluetooth (for rapid pairing) + 433MHz RF, ensuring you aren’t solely dependent on the internet for local control.
- Flexible mounting — fits standard DIN rails in your distribution board or can be installed independently in junction boxes, depending on your project requirements.
Performance and Details
The 2.4GHz b/g/n WiFi module ensures a stable connection to your router, while the integrated Bluetooth speeds up initial setup—no need to manually type in your network password. With a total combined power capacity of 16A / 3500W, it comfortably handles extensive lighting systems or medium-power electric motors. The Interlock mode prevents two opposing channels from being activated simultaneously, actively protecting reversible motors from conflicting commands. The Inching mode automatically switches off the channel after a set interval—precise to the second, between 1 and 3600 seconds.
| Parameter | Value / Detail |
|---|---|
| Controllable channels | 4 independent |
| Power supply | 85–220V AC or 5V USB |
| Power per channel | 2000W / 10A |
| Total power | 3500W / 16A |
| WiFi connectivity | 2.4GHz b/g/n + Bluetooth |
| RF compatibility | 433MHz (remote not included) |
| Supported apps | Tuya Smart, Smart Life (Android / iOS) |
| Voice control | Amazon Alexa, Google Home |
| Operating modes | Self-locking, Interlock, Inching (1–3600s) |
| Dimensions | 81 × 76 × 28 mm |
| Operating temperature | -20°C ~ +70°C |
| Humidity | 5%–90% non-condensing |
| Mounting | DIN rail or independent |
Programming and Usage Instructions
The relay features 3 working modes configurable directly via the Tuya Smart app: Self-locking (the channel stays active until you send a stop command), Interlock (activating one channel automatically deactivates the conflicting channel—ideal for reversible motors), and Inching (the channel automatically deactivates after the set time interval, between 1 and 3600 seconds).
- Download the Tuya Smart or Smart Life app from the Google Play Store or App Store and create a free account.
- Connect the relay to a power source (85–220V AC or 5V USB) and ensure the WiFi LED is flashing rapidly (pairing mode active).
- Open the app, tap the “+” button to add a device, and select the Bluetooth (recommended) or WiFi pairing method.
- Follow the in-app prompts to connect to your 2.4GHz WiFi network and complete the initial setup.
- Once paired, access the settings for each channel in the app to select your desired mode: Self-locking, Interlock, or Inching.
- For Inching mode, set the time interval (1–3600 seconds) after which the channel will automatically deactivate.
- For Amazon Alexa or Google Home integration, add the Tuya Smart skill in your respective voice assistant app and sync your devices.
- Optionally, pair a compatible 433MHz RF remote using the RF learning function in the app.
Package Contents
- 1 x 4-Channel Independent WiFi Smart Relay (Tuya / Smart Life)
Note: 433MHz RF remote and wiring accessories are not included.
Frequently Asked Questions
Can I use this relay to control a reversible gate motor?
Yes. The Interlock mode is specifically designed for reversible motors: activating one channel automatically turns off the conflicting one, preventing simultaneous commands that could damage the motor. Simply configure two channels in Interlock mode via the Tuya Smart app.
Does the relay work at 220V AC and can it be mounted on a DIN rail?
Yes. The relay accepts voltages between 85V and 220V AC, making it fully compatible with standard electrical installations. Its design includes native support for DIN rail mounting, making it ideal for direct integration into your home or commercial distribution board.
Is a permanent internet connection required for the relay to work?
Remote control via the Tuya Smart app requires an internet connection. However, by pairing a compatible 433MHz RF remote (sold separately), the relay can be operated locally without the internet. Previously programmed states (schedules, working modes) are stored on the device and remain active even without an internet connection.
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