Tuya Smart Wi-Fi and RF433 Dry Contact Relay Module with 4 Channels

Tuya Smart Wi-Fi, Bluetooth and RF433 Dry Contact Relay Module - 4 Channels 10A

The 4-Channel Smart Tuya Relay Module with dry contact is a versatile and powerful solution for automating

any existing electrical system. Available in two versions, DC/AC 7–32V and AC 85–250V , it fits perfectly

to low or high voltage systems . Thanks to the WiFi, Bluetooth and RF433 MHz connection, you can control each output

individually via smartphone from App , voice command or remote control . Compatible with Tuya Smart, Smart Life App,

and Amazon Alexa and Google Home voice assistants, this module is ideal for automating lights, gates , boilers ,

intercoms , roller shutters or professional systems, maintaining full control remotely or locally.

4 independent clean contact outputs (NO/NC)

The module is equipped with 4 completely independent relay channels, each with a clean contact configurable as Normally Open.

Open ( NO ) or Normally Closed (NC ) . This architecture allows integration with devices without power supply

directly on the entrance, such as intercoms , boilers , alarm control panels, buttons, gates and many other industrial or domestic devices.

Each channel supports up to 10A

Each button/relay is designed to support a maximum load of 10A (approximately 2200–2400W), making the module

also suitable for high-power devices such as pumps, stoves , industrial fans or powerful LED lighting .

A truly professional solution even for intensive loads.

Connectivity 2.4GHz WiFi + Bluetooth + RF433 MHz

The module connects directly to 2.4GHz WiFi via Tuya Smart or Smart Life app . Built-in Bluetooth ensures

a quick pairing during setup. In addition, it supports RF433 MHz control, which allows activation

channels via compatible RF remote controls (not included), even without an Internet connection.

Compatible with Alexa, Google Home and voice assistants

The module fully supports voice commands via Amazon Alexa and Google Assistant . You can turn on or

turn off any channel with a simple voice command, or include the module in custom routines ,

for example to turn on outside lights , open a gate , or turn off a water pump.

Available in two power versions:

DC/AC 7–32V : Suitable for low voltage systems, automation systems, access control and vehicles.

AC 85–250V : ideal for civil and industrial systems powered by standard 220V.

Both versions also support alternative power supply via USB Type-C 5V port (standard 5V/1A or higher),

They offer the same range of smart features and are interchangeable based on your electrical system.

Integration with existing systems – 100% retrofit

Thanks to the clean contact, the module is perfect for transforming existing electrical systems into smart ones , without having to

change the power supply of the controlled devices. Just connect the NO/NC/COM terminals and you're done.

Family and multi-user sharing

The module can be shared with multiple users via Smart Life app , enabling collaborative management

of lights, motors and smart devices at home or in the professional field.

Customizable relay state on reboot

From the app you can choose whether each channel , when power is restored, should turn back on, off or remain on.

the last state. An indispensable feature in the event of a blackout or network reset.

Timers, Automations and Inching Mode for each channel

Each relay can be programmed to:

• Manual or scheduled on/off
• Temporary power on ( inching ) from 1 to 3600 seconds
• Cyclic power on, e.g. every 30 minutes for 10 seconds
• Conditional activation based on other Tuya devices (e.g. presence, temperature, humidity)

This flexibility allows you to customize each channel to suit different needs.

Advanced Features:

• Individual control for each channel
• Smart scenes and automations with other Tuya devices (e.g. lights, sensors, cameras)
• Relay status memory after blackout (on/off/last status)
• Remote status monitoring
• Bluetooth compatibility (fastest pairing via app)
• Clean NO/COM/NC contact for each channel, without direct power supply on the output

Recommended Applications:

• Automation of electric gates, locks, garage doors
• Control of intercoms, bells, boilers, pumps, irrigation
• Integration with existing dry contact home automation systems
• Control of lights, fans, HVAC systems, shutters, blinds
• Ideal for home automation, hotels, B&Bs, industrial plants, technical panels