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WIFI USB remote controller

SKU: FA2181-3
Power Input

DC 5V (USB) / DC 7-32V
Relay Output

10A dry contact (NO/NC/COM)
WiFi Standard

2.4GHz 802.11 b/g/n
App Support

Tuya Smart Life / eWeLink
Voice Assistants

Amazon Alexa, Google Home
Working Modes

Inching / Self-locking (app configurable)
Operating Temperature

-40°C to +70°C
Board Consumption

< 1W (standby ~80mA)

The WIFI USB Remote Controller is a compact, multi-functional smart switch module designed to add wireless control to home appliances, computers, and industrial equipment. It combines a WiFi-enabled relay with USB power input and mobile app control, providing a simple path to remote switching without complex wiring or programming.

The module operates from DC 5V via USB or external DC 7-32V power input, making it versatile for different installation environments. The onboard 10A relay provides dry contact output with Normally Open (NO), Normally Closed (NC), and Common (COM) terminals, capable of switching AC or DC loads up to 10A. This means it can directly control lamps, fans, garage doors, and other household appliances.

Setup is handled through the Tuya Smart Life app (or eWeLink app depending on variant), available for iOS and Android. The module connects to 2.4GHz WiFi and supports voice control through Amazon Alexa and Google Home. Once configured, you can control connected devices from anywhere via your phone, using voice commands, or through automation routines.

The module supports multiple operating modes including inching (momentary) and self-locking (toggle) modes, configurable through the app. Timing functions allow scheduled on/off and countdown timers. Device sharing enables multiple family members to control the same module.

The USB port power supply simplifies installation, and the compact form factor with mounting provisions makes it suitable for installation in junction boxes, equipment enclosures, and control panels. Some variants include an IP66 waterproof junction box for outdoor and harsh environment applications.

Whether you are automating a garage door, controlling landscape lighting, or remotely managing computer power, the WIFI USB Remote Controller offers a practical, cost-effective solution. It is suitable for individual users, students, and businesses purchasing in bulk for product development or educational programs.

Features

  • WiFi relay control — Remote switching via mobile app from anywhere

  • USB 5V / DC 7-32V power input — Flexible power options for different installations

  • 10A relay output — Dry contact switching for AC/DC loads

  • Voice control support — Compatible with Amazon Alexa and Google Home

  • Inching and self-locking modes — Configurable operating modes via app

  • Timing functions — Scheduled on/off, countdown, and loop timing

  • Device sharing — Multiple users can control the same module

  • Compact form factor — Suitable for junction boxes and equipment enclosures

  • Optional waterproof box — IP66 enclosure available for outdoor use

  • Wide application range — Garage doors, lighting, PC power, irrigation, and more

Technical Specifications 

# Parameter Specification
1 Power Input DC 5V (USB) / DC 7-32V
2 Relay Output 10A dry contact (NO/NC/COM)
3 WiFi Standard 2.4GHz 802.11 b/g/n
4 App Support Tuya Smart Life / eWeLink
5 Voice Assistants Amazon Alexa, Google Home
6 Working Modes Inching / Self-locking (app configurable)
7 Operating Temperature -40°C to +70°C
8 Board Consumption < 1W (standby ~80mA)

Usage

Getting Started

  1. Download the app — Install the Tuya Smart Life or eWeLink app from your app store.

  2. Power the module — Connect a USB 5V or DC 7-32V supply to the input terminals.

  3. Enter pairing mode — The module typically enters pairing mode on first power-up, or you can trigger it by pressing the onboard button for several seconds.

  4. Connect to WiFi — Ensure your phone is on a 2.4GHz WiFi network. Follow the app instructions to add the device.

  5. Connect the load — Wire your appliance to the relay’s NO/NC/COM terminals. Note: the relay provides dry contact switching only — it does not output voltage.

  6. Configure and control — Use the app to set inching/self-locking mode, timers, and scenes. Add voice control through Alexa or Google Home.

Typical Applications

  • Garage door control — Use inching mode for momentary switch activation

  • Home lighting — Remote switching of lamps and ceiling lights

  • PC power management — Remote boot or shutdown of computers

  • Irrigation systems — Control sprinkler valves and pumps

  • Landscape lighting — Individual circuit control for outdoor transformers

  • Access control — Control electric locks and gate operators

Notes for Business Buyers

  • Wide voltage compatibility — USB 5V and DC 7-32V options support diverse installations.

  • Mature ecosystem — Tuya/Smart Life and eWeLink are widely adopted with extensive device compatibility.

  • Cost-effective — Integrated WiFi and relay reduce component count and assembly complexity.

  • Suitable for bulk purchasing — Ideal for smart home integrators, product developers, and educational institutions.

Q: What is the WIFI USB Remote Controller used for?

It is a smart relay module for remote control of home appliances through a mobile app. It supports voice control, timing functions, and multiple operating modes.

Q: What power input does the module require?

It supports DC 5V via USB or DC 7-32V external power input, depending on the variant.

Q: Does the module support 5GHz WiFi?

No. The module only supports 2.4GHz WiFi. If your router uses a combined 2.4G/5G network, you may need to separate them in your router settings.

Q: How do I pair the module with my phone?

Download the Tuya Smart Life or eWeLink app, connect your phone to a 2.4GHz WiFi network, power on the module, and follow the app’s instructions to add a new device.

Q: What is the difference between inching and self-locking mode?

Inching (momentary): the relay activates for a set duration (default 1 second) then automatically turns off — ideal for garage doors. Self-locking (toggle): the relay stays on or off after each command.

Q: Does the module support voice control?

Yes. It supports Amazon Alexa and Google Home voice assistants.

Q: Can I control AC appliances with this module?

Yes. The relay contacts can switch loads up to 10A at 250V AC or 30V DC. Ensure proper safety precautions when working with mains voltage.

Q: Does the relay output voltage?

No. The relay provides dry contact switching only — it acts as a switch and does not output voltage. The connected device must have its own power source.

Q: What is the standby power consumption?

The board consumption is typically < 1W, with standby current around 80mA.

Q: Can I purchase in bulk for a school or company?

Yes. This module is suitable for both individual users and business purchasing, including smart home integrators, product developers, and educational institutions.

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