QIACHIP 433mhz RF Wireless Transmitter and Receiver Module Kit RX480e 4 Channel Output,Remote Control Radio Switch 1527 Learning Code DIY Controller

The media could not be loaded. Havent tested range yet but very good and consistent at short range

Simple set up.

I spent several hours trying to sync each channel with my Sonoff rf bridge. Channels 1&2 seemed to be linked together, they both triggered the same message. 3&4 were fine. Upon close examination under a bright light I could see a tiny glint of copper between pins 1&2. A bit of cautious scraping to remove the tiny short and the tax now functions correctly.Additional note- the transmitter supply voltage is from 3.3V to 24V. (Apparently the higher voltage of within these levels the greater the range that can be achieved.) I have proved the transmitter workers up to 13.5V with only the above problem. BUT Beware. The receiver operates at 5V max.I have not tested the other two pairs yet, but apart from the above and some difficulty setting the correct modes for the receiver (which I will probably not use for this project) I am hopeful all will be well.I am also pleased that the transmitter does work with the Sonoff RF Bridge. The only way for me to discover this was to buy these and test it out. So to anyone else wanting to interface with the Sonoff RF bridge it can be done. It’s a bit tricky to set up though. Hint, add each channel as an alarm in the Sonoff App, then rename it what you will.

We use them for door access

Very Poor Quality! the first Transmitter module failed within two hours draining the battery. The Second Transmitter would only send channels 1 and 2. The third transmitter module appears ok ( but its only been a day so far) so a 30% success rate. These modules are cheap and I suppose you get what you pay for!

Range could be a lot better but okay otherwise and easy to use.

All working well

Just be warned there's no voltage regulator on board so 5 volts supply only on the reciever board