I am setting up a mhcozy 4 channel wifi relay. which device on the smartlife app should i choose?

i use smart life and work great

I refuse to use apps and prefer to host my own. Can this be flashed with tasmota?

Who knows ! It might be easier to find an alternate controller

Is the power input polarity, reversible?

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.

Can I use this to control a bathroom fan/heater/light combination unit?

You can but you need a low voltage power supply such as USB 5vdc or 5-25 ac/dc adapter.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

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)

Product ID: 391078783

Details

Connector Type
Crimp
Contact Material
Metall
Contact Type
No Nc Com
Current Rating
10 Amps
Mounting Type
DIN Rail Mount

⏰Customizable timer modes

⚡10A max switching current

📶4-channel WiFi & Bluetooth control

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

¥6989

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Description

🔗 Unlock your smart home’s full potential with 4-channel wireless power control!

FLEXIBLE OPERATION MODES - Choose self-lock, momentary, or interlock modes with adjustable timing from 2 seconds to 1 minute.
VOICE ACTIVATED CONVENIENCE - Effortlessly command your devices hands-free with Alexa, Google Home, or Siri integration.
POWERFUL RELIABLE SWITCHING - Handles up to 10A at 32V with industrial-grade relay for heavy-duty smart home automation.
SEAMLESS MULTI PROTOCOL CONTROL - Control 4 devices via WiFi, Bluetooth, or 433MHz RF for ultimate connectivity freedom.
FAMILY READY SCHEDULING SHARING - Set repeat timers, countdowns, and share remote access with loved ones for smarter living.

The MHCOZY 4 Channel Smart WiFi RF Bluetooth Relay Switch Module offers versatile remote control of up to four electrical devices via WiFi, Bluetooth, or 433MHz RF. Compatible with Alexa, Google Home, and Siri, it supports multiple operation modes and customizable timers, delivering reliable 10A switching power in a compact DIN rail mount design. Perfect for seamless smart home automation and family sharing.

Specifications

ASIN	B09M6HTDVS
Best Sellers Rank	#78,720 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #155 in Electrical Outlet Switches
Brand	MHCOZY
Brand Name	MHCOZY
Coil Voltage	5 Volts
Connector Type	Crimp
Contact Current Rating	10 Amps
Contact Material	Metall
Contact Type	No Nc Com
Current Rating	10 Amps
Customer Reviews	4.5 out of 5 stars 337 Reviews
Included Components	4 channel wifi dry contact relay board and ABS shell
Manufacturer	Mic technology co.,ltd
Maximum Switching Current	10 Amps
Maximum Switching Voltage	32 Volts
Minimum Switching Voltage	5 Volts (DC)
Model	TY4CH
Mounting Type	DIN Rail Mount
Operation Mode	Automatic
Part Number	TYVBCH4RF
Smart Home Compatibility	Smart Home Compatible
Specification Met	CE
Unit Count	1 Count
Wattage	1 watts

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

¥6989

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews