QIACHIP10 Pack Wireless 433Mhz RF Module Receiver and Transmitter Remote Control Built-in Learning Code 1527 Decoding 4 Channel Output (Transmitter and Receiver kit)

Took receipt of the product and set it up on a breadboard. After developing the circuit according to the seller's instructions I wanted to examine the transmitter output on a spectrum analyzer so I powered up the transmitter with a 9 volt battery which is well withing the recommended voltage range, I could not detect any RF output in the 433 ISM band. I did locate a low level incoherent noisy signal at about 540 MHz. I returned both the transmitter and receiver to Amazon and asked for a replacement. We will have to see if the replacement works any better. More to come.This is my second review. The replacement arrived and this one worked as advertised. The receiver learned the code with no issues. I connected an SMA short jumper to the antenna terminal and measured the transmitter output power into a 50 ohm load. It produced about 10 dBm.

buena calidad, funciona perfectamente. Si lo recomiendo

Good range. Easy to pair. There is a logic to the pairing. Reciver data lines go high. Pull transmitter pins low to transmit. Used with tasmota rf bridge. Can't send/receive custom data packets (as far as I can tell). Much better than the cheaper options.

Got this to add some RF remote capabilities to my arduino project. Was easy and straight forward setup, and range seems to be adequate even without the supplied antenna attached (which appears to require soldering). I didn't have a soldering kit, so went through without the antenna, and the range seems to still be enough for my purposes. Tested at least 20-30 feet, through a thin aluminum case, through 2 wooden walls, might have even pointed the remote in opposite direction as well, but don't remember.EDIT 2023: Moved the project into a vehicle, and range became horrible, even with antenna soldered to chip! The range is now barely 5-10 feet, and remote must be pointed directly at the device getting closer to the 10 foot range. Not sure what the issue is, reaching out to qiachip support through email, otherwise, may need another solution for my project.The only issue, which was kind of a big one to be honest, is that the remote did not come with a battery, and is some off size battery (at least to me) I think the size was like A22 or A23 or something like that.Obviously can just order a battery online or whatever, but I was trying to make sure if what I was attempting to do with my arduino project was even possible in case I needed to change directions, so I tried to get a battery local.At 10:00 at night, Walmart was my best option, I thought. Online it showed 3 locations near me had this size in stock. All 3 of them did not. By close to 11pm, there was 1 more Walmart I could have checked, but would not have made it by closing (close at 11pm here).Finally went to a 24 hour walgreens about 20 minutes drive away from me, and they thankfully had the correct battery size.That being said, can not really knock the product for this issue, but apparently it's not a typical battery size, and most places around me seemed to not have them in stock, so definitely would have been nice to receive a battery with this

The transmitter's terminals are easy to find out, but it would have been easier to find out the terminals for the receiver if a circuit diagram would have been provided.