QIACHIP 433MHz Wireless Remote Control Switch Mini Receiver Built-in Learning Code 1527 Decoding 4 Channel Output with 656 FT Long-Distance Remote Control 4-Button Transmitter White

Update: The module is working now and I am happy with the product. The problem I had was in the instructions. It does not tell you that you have to set the "Working Mode" before you pair the modules. Also the instruction video from Qiachip clearly shows that you can change the working mode after you pair the modules. I wanted the receiver to latch it's output "on" and turn the channel off with the same button. That is selection 2 in the working mode. I really wanted to like this transceiver. Very simple to use with good range and small. However, the "Multiple Working Mode" will not shift between the "3" options. It is stuck in "Momentary Mode" and this will not work for my application so it is useless to me. I sent a support issue to Qiachip but they did not reply so don't count on "Product Support" from Qiachip, very disappointed!!!

Didn't know what to expect I have a lot of RF background and was amazed at the specs Receiver sensitivity and RF output. I did a RF propagation calculation to see if it would meet my needs and it did. The big thing was would it meet the specs they gave me. Well I am pleased to say it did. I need a device that I could send some switch closures to the remote receiver. I have a large building a distance from my house over 150 feet and I wanted to get an alarm if my smoke detector went off. I had to make a modification to the detector to interface to the transmitter but it works great. Did not have to trench to run wires and the cost for these devices are Great. I had no problem pairing the devices and plan on doing the same thing in another building. I bought the ten pack so I would have additional ones for future projects. I love that if I am not happy with my order I can return them and get my money back. I love Amazon what a GREAT company. Hope this was helpful and encourages you to give it a try.

These RF Modules work great at close range. I haven't tested them yet further than a few feet. There are a few videos that show you how to program them, but they don't come with any instructions. This makes them difficult to setup at first. Once understand how to program them, they are quite easy to use. One thing to note is that they are Normally Closed. So, if you're using them to activate a controller of sort, ensure you can program it to recognize when the switches are opened. The boards are about the size of a quarter and work with or without the included antennas (at short range).

The unit worked perfectly as advertised. I was pleasantly surprised by the remote. It came with the 12vdc battery and was easy to hold and use. The price is right too. I used the unit to drive a voice module. I used a 2N2222 transistor to convert the high output to low which is necessary to control the voice module. Worked great. The best part is NO relays. I gladly give this a five star.

I am having terrific fun with these units. So far so good. Testing out all good and rugged enough. Solid performance helped me to figure out troubles with other transmitters. I made a transmitter tester that makes me smile. WHAT? ... I needed buttons, and it works great. I found limits of the range acceptable for most applications without the need for the antenna. I did notice the range increase with the antenna. The antenna was required to clone (scetchy) key fob remote. (from a different seller). I believe it took the strength of this unit to get those key fobs working. Rated current is 10-20ma? Seems on par. No actual measurements. It is a healthy usable signal

No support. Inadequate documentation. Transmitter had dead battery when received. Measured at 2.24VDC. Replaced battery. New battery measured at 12.78VDC. Started to program receiver devices when new battery died, too! Measured battery at 8.45VDC. Battery was very warm. Battery got extremely hot in the transmitter, even when not being used.

way easier and more reliable than using just a reciever, the dedicated gpio pins for the buttons definetly make sure it works correctly. would use this instead of just a remote and reciever anyday

This is the way to get digital programmable remote with extended range for 9 bucks. Remote will work with lots of stuff like SONOFF R3 switch. You can also get 2 for 15 bucks from another seller. I did not need 2 that's why this is good deal for me.

Provato un solo canale e devo dire che funziona perfettamente e, a breve distanza, anche senza antenna. Come letto però in altri feedback devo confermare che le istruzioni sono scarsissime ma guardando tra i feedback di Amazon si trovano molti aiuti. In ogni caso io l'ho solo accesso, collegato un led con una R da 330 ohm tra D2 (RX) e il positivo, un pulsante tra GND e K4 (TX), premuto 8 volte il pulsantino per resettarlo, premuto nuovamente due volte per attivare la modalità TOGGLE ed ha funzionato subito. I due moduli alimentati ognuno con una 18650 (4,2 Volt).

Kompaktes und zuverlässig arbeitendes 433-MHz-Empfangsmodul. Lässt sich problemlos mit Arduino nutzen, gute Reichweite und stabile Signalübertragung. Ideal für DIY- und Smart-Home-Projekte. Für den Preis absolut empfehlenswert.

Buen producto, buen alcancé y muy fácil de instalar.

Utilizzato per controllare a distanza un motore stepper ed un servo tramite un clone di Arduino. Si integra perfettamente nel codice perchè non ha bisogno di alcuna libreria, bisogna semplicemente inviare l’output desiderato quando si riceve l’input proveniente dal pin digitale collegato allo specifico canale del ricevitore. Per quanto riguarda la portata è ottima, prende attraverso i muri di casa a svariati metri di distanza, in campo libero ho testato fino a 30 metri circa e riceve alla perfezione, credo posso ricevere da ben più lontano. La prima volta che si accende bisogna impostare la modalitá di ricezione desiderata premendo il pulsante presente sul modulo altrimenti non funziona nulla (bisogna farlo solo la prima volta poi funziona sempre appena viene acceso) io ho impostato la prima modalità. Il telecomando è di buona fattura e ha le pile incluse quindi è un ottimo prodotto dopotutto per 10€.

Works as expected. Easy to program.