---
product_id: 536177515
title: "4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home"
brand: "mhcozy"
price: "C$3582"
currency: NIO
in_stock: true
reviews_count: 11
category: "Mhcozy"
url: https://www.desertcart.ni/products/536177515-4-channel-smart-wifi-rf-bluetooth-wireless-dry-contact-relay
store_origin: NI
region: Nicaragua
---

# Customizable timer: 2s to 1hr Supports 5-32V DC input voltage 4-channel WiFi & Bluetooth control 4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home

**Brand:** mhcozy
**Price:** C$3582
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect, Control, Conquer Your Smart Home

## Quick Answers

- **What is this?** 4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home by mhcozy
- **How much does it cost?** C$3582 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/536177515-4-channel-smart-wifi-rf-bluetooth-wireless-dry-contact-relay)

## Best For

- mhcozy enthusiasts

## Why This Product

- Trusted mhcozy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Voice-Activated Smart Living:** Effortlessly command devices via Alexa, Google Home, or Siri
- • **Seamless Multi-Protocol Control:** WiFi, Bluetooth & 433MHz RF for ultimate remote flexibility
- • **Family-Ready Scheduling & Sharing:** Create repeat schedules and share control with loved ones instantly
- • **Powerful & Versatile Voltage Range:** Operates smoothly from 5V up to 32V DC for diverse setups
- • **Tailored Automation at Your Fingertips:** Set momentary, self-lock, or interlock modes with precise timing

## Overview

The MHCOZY 4 Channel Smart WiFi RF Bluetooth Relay Switch Module empowers you to remotely control up to four devices via WiFi, Bluetooth, or 433MHz RF. Compatible with the Tuya Smart Life app and voice assistants like Alexa and Google Home, it supports a wide input voltage range (5-32V DC) and offers flexible switching modes including self-lock, momentary, and interlock. Ideal for DIY smart home projects, it features customizable timers, real-time status sync, and easy family sharing, making automation accessible and reliable even without WiFi connectivity.

## Description

MHCOZY 4CH WIFI Smart Relay Module, DIY Smart Home. With the free Smart Life/Tuya app, you can remotely control your household appliances or electrical devices anytime and anywhere. Also suitable for the environment without Wi-Fi network, configure it with 2.4G WiFi first, change the router setting to block the Wi-Fi connection for the relay, then you can use the Bluetooth remote control. WiFi control, no programming required. No matter where you are, you just need to download an app to connect the Wi-Fi and control the cloud. Features: Input voltage: USB 5V or AC7-32V With signal instructions light and relay attraction light Power <1W and standby current: 80mA Cutover current <10 A, cutover voltage <250 V. 10A Relay Model Operating temperature: -40 to 70 °C. Working humidity: 40% to 80% relative humidity Function: 1.Standard self-locking mode: turn 4 connected devices on / off separately. 2. Momentary typing mode, press the open relay via mobile phone and then immediately interrupt tightening (standard one second). Locking mode: turn on one device every time and turn off others at the same time. It also has the timing share function. Features: Control 4 devices independently: turn on 4 household appliances independently. Create single/repeat/circle/countdown timers to automatically turn devices on and off at the specified time. And the timers can run themselves, even if the network is not available. Sync status: real-time device status is provided to the app. Voice control. WiFi smart switch works perfectly with Alexa enabled devices such as Echo/Tap/Dot, as well as Google home. "Alexa, turn on the light." "Alexa, turn on garage door." "Hey Google, turn off the bedroom light." "

Review: Works great - I used this to control lighting in conjunction with home assistant. I do not trust this type of equipment to switch 240V so it currently is switching 24V contactors which deal with the mains lighting. Easy to pair to the familiar Tuya app and works great with home assistant. I'm sure you can reflash this if you really want local access but I have found this to be rock solid as it comes.
Review: Really handy - This is used on an off grid setup. Most of the time there is only the 12v circuit there (power banks occasionally). So being able to switch on the led lights until the mains circuits are live is handy, lights on when leaving, more handy, and having routines so that you can have a PIR trigger the light coming on, in the dark (settings I'm the app)) makes this really handy. So the setup is a WiFi router that has 4G cellular and powered by 12v. This uses SmartLife so easy to add routines etc

## Features

- Bluetooth WIFI Relay,Smart life tuya app wifi remote& 433Mhz RF&Bluetooth remote 4 Channel Smart Relay.Easy to configure to Smart life app,working voltage is DC 5V or DC 7-32 V.Once configured with Smart life app,you can use bluetooth remote or 433mhz RF control when lose WIFI connection
- Widely Usage,MHCOZY 4 channel WIFI Relay,with 3 working mode,self-lock Momentary and Interlock Switch,you can set mode by channel,adjust momentary time from 2 second to 1 hour in Smart life app.DIY WIFI Garage Door Opener,Automate chicken hoop door shutter blind curtain
- Schedule and Share with Family,you can set countdown sunrise Repeat schedule,and easy share phone remote to with your family
- Simple ABS Shell,can be fixed to electronic box,Input voltage DC 5-32V,DIY WIFI Garage door opener sprinkler controllers
- Voice control,One key to link with Alexa Google assistant Siri,use your voice command to control your Garage light when busy

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09M6HTDVS |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 63,635 in DIY & Tools ( See Top 100 in DIY & Tools ) 107 in Smart & Remote Controlled Plugs |
| Customer Reviews | 4.5 4.5 out of 5 stars (307) |
| Date First Available | 20 Nov. 2021 |
| Item Weight | 110 g |
| Item model number | TY4CH |
| Manufacturer | Mic technology co.,ltd |
| Part number | TYVBCH4RF |
| Plug profile | DIN Rail Mount |
| Product Dimensions | 8 x 8 x 3 cm; 110 g |
| Specification met | ABS |
| Wattage | 1 watts |

## Product Details

- **Connector type:** Crimp
- **Contact material:** Silver
- **Contact type:** Normally Open
- **Current rating:** 10 Amps
- **Mounting type:** DIN Rail Mount

## Images

![4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home - Image 1](https://m.media-amazon.com/images/I/51hQmIX0Y6L.jpg)
![4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home - Image 2](https://m.media-amazon.com/images/I/61WuiyLTRfL.jpg)
![4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home - Image 3](https://m.media-amazon.com/images/I/618pDT3Wg3L.jpg)
![4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home - Image 4](https://m.media-amazon.com/images/I/51-wqG+r6YL.jpg)
![4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Tuya Smart life app Remote Control,Work with Alexa Google Home - Image 5](https://m.media-amazon.com/images/I/61acoGSZQqL.jpg)

## Questions & Answers

**Q: I am setting up a mhcozy 4 channel wifi relay.  which device on the smartlife app should i choose?**
A: i use smart life and work great

**Q: I refuse to use apps and prefer to host my own. Can this be flashed with tasmota?**
A: Who knows ! It might be easier to find an alternate controller

**Q: Is the power input polarity, reversible?**
A: I power it with a USB plug like the one used for charging your phone.  The USB spec is 5V DC.  I'm guessing all of the power circuitry in the unit is also DC, so the answer would be no, but that's just a guess.

**Q: Can I use this to control a bathroom fan/heater/light combination unit?**
A: You can but you need a low voltage power supply such as USB 5vdc or 5-25 ac/dc adapter.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by S***J on 17 June 2025*

I used this to control lighting in conjunction with home assistant. I do not trust this type of equipment to switch 240V so it currently is switching 24V contactors which deal with the mains lighting. Easy to pair to the familiar Tuya app and works great with home assistant. I'm sure you can reflash this if you really want local access but I have found this to be rock solid as it comes.

### ⭐⭐⭐⭐⭐ Really handy
*by U***N on 27 February 2025*

This is used on an off grid setup. Most of the time there is only the 12v circuit there (power banks occasionally). So being able to switch on the led lights until the mains circuits are live is handy, lights on when leaving, more handy, and having routines so that you can have a PIR trigger the light coming on, in the dark (settings I'm the app)) makes this really handy. So the setup is a WiFi router that has 4G cellular and powered by 12v. This uses SmartLife so easy to add routines etc

### ⭐⭐⭐⭐⭐ Very good!
*by S***N on 26 November 2024*

I was sceptical about these but they work perfectly! The App is a little clunky but easy to set up, works anywhere. I’m activating 230v mains devices and 12v DC . Many a prank to be made 😉😎😎

## Frequently Bought Together

- MHCOZY 4 Channel Smart WiFi RF Bluetooth Wireless Dry Contact Relay Switch Module,Phone app Remote Control,Compatible with Alexa Google Home (Tuya 4CH 5V AC/DC7-32V)
- DieseRC 4 Channels WiFi Smart Switch, DC 5V 12V 24V 36V Passive Output Relay Module Ewelink APP WiFi Control Compatible with Alexa/Google Home, Inching/Self-Locking Switch

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-24*