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)

I purchased this product to integrate into my pool pump to make it so that I can control from my phone. This device was very easy to set up and integrated it into the Smart Life app without any problems. I have it in a plastic waterproof container outside and have no connection issues to my Wi-Fi, even though the router is inside. Once to it. The quality is great and the product can be used for so many different applications. Automating a pool pump was so easy with this. After getting it working with the Smart Life app, I then integrated it into home assistant where I set up my schedule for automation. Couldn't be happier with this purchase!

Works great for controlling devices with Alexa!

I see in the description that Amazon states this is a "Frequently returned item". I suspect that a lot of the returns are that people don't really understand the device. For me, it is EXACTLY what I wanted. I need a WiFi switch that I can control my gate operator and garage doors remotely. This is GREAT for that purpose. I connected each of my garage doors to one of the 4 relays. I put the two wires from each to the "COM" and "NO" connections. I then set the control to "INCHING" for each and the inching time to one second. Now when I hit the app for one of the doors, the relay closes for one second then reopens. Just like hitting the button on the garage wall! As far as the review about it not being a "true latching" relay, I easily solved that by supplying power to this controller from the Uninterruptable Power Supply that I already had in the garage. Now it never loses power, so the relay always stays where I want them.

I run my drip irrigation with this. Few 12 volt water solenoids, some outdoor cabling, and the standard 1/4” poly tubing. Ended up being a whole lot cheaper than the 4 channel irrigation timer and I can control it from my phone. I’ll have to put it in a weather resistant enclosure of some variety, but it’s currently stuck to the bottom of a solar panel with the $10 charge controller that’s been out there for 3 years now. I have a second one that’s lived in the utility cabinet so I can control the water pump, the water heater, and a dump load that’s been going for quite a while too. Connects to wifi easy, easy to set up timers, and the relays on the board haven’t given up on me yet.

This is a decent well-built switch and would work well for a lot of applications that don't require latching. As a 4-gang smart relay it worked perfectly and would be great mounted on a wall for garage doors or a gate. It was a bit large to fit in my Casablanca fan conversion but would have fit tightly. This was the only switch from MHCOZY that can have up to two interlocked pairings. I was looking to remotely reverse my 14' high Casablanca fan motor, so I needed two interlocked "latching" relays (this one has an extra pair), but this relay isn't a true latching relay and shouldn't be sold as such. The relay memory setting could have mitigated this, but the memory function only worked 100% when interlocking was turned off. Even if MHCOZY fixed this to work fully with "latching", the relay switch still isn't a true latching or bistable relay since the switch coils need to be charged to maintain their state... *** All the switches toggle back to NC when power is lost! *** The memory feature can flip them back to their previous state once power is turned back on, but this obviously isn't viable as a forward/reverse fan switch in my application. Instead, I purchased a smaller better-built MHCOZY dual interlocking switch and paired it with an OONO 12-volt relay that I set to 1-second inching (yes, inching works in interlock mode). This works great for motors and worked for my Casablanca Inteli-Touch 3 (IT3) smart conversion. This took a lot of trial and error. I hope this helps someone else!

I use this to control contactors that switch off and on my electric patio heaters. Unit performs as advertised and was easy to integrate. The only issue is that occasionally the unit will lose connectivity and I have to power cycle it (flip the circuit breaker that provides power).

funciona muy bien con AC

Works great, paired to truck WiFi and quickly responds. Using it to disconnect remote Turn On wires for 8 ch amp and subwoofer amp. Also using two channels to trigger DSP presets with a negative contact. Works flawlessly. Will buy more for future projects