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)

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

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.

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 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!

I purchased this to power up and down my Flex 6400 remotely. It has 4 ports so you can remotely switch other things as well. Setup is fairly simple and it works great. I've been using it for 4 months now and so far I haven't had any issues with it. This is now what Flex is recommending for remote operation so rest assured, it works great.

I was using this as a zone controller for my outdoor wood furnace and it worked fine until spring but mysteriously died over the summer when the furnace was disconnected from all power. I took it apart to troubleshoot and did not see anything damaged no watermarks or rust. This was located inside the firestar combustion control panel of my Central Boiler so I can only assume that it was not physical damage or EMP from nearby lightning. Just another piece of Chinese junk.

The app is free, easy hook-up, works as advertised.

I liked its overall ease and programabilty of its functions, relay inching capabilities which is why I chose it to make a IOT Remote Starting System and Door Lock and Unlock controls for my CAR!!! Which is now remote start and locks are controlled from anywhere in the world through the push of a button on my phone!! So no more going out in the cold to a frozen vehicle for me the rest of this winter!!@ and the best part is a remote starting system for a 2009 chevy malibu, costs over 500 to purchase and have installed usually and with the help of this product I was able to DIY my own for the grand total of $25 and limitless proximity range capabilites equipping the car with a 4 g Hotspot its always connected and ready to Start remotely from anywhere!!