KOOBOOK 2Sets HX1838 NEC Infrared IR Remote Control Sensor Module IR Receiver Module DIY Kit for arduino

The people complaining about the battery -- this uses a CR2032. An incredibly common 3v battery. If you have any electronic devices in your home, you will have these.Someone else was "cutting the battery compartment" to fit a CR2025... THAT'S NOT RIGHT BATTERY! Everything here works fine.The only difference here in what I received is that the receiver transistor is soldered into the board, rather than socketed. So what? If you're to the level where you're making your own circuits, it will take you 20 seconds to desolder this transistor for your own project.I hooked the receiver to my scope and am receiving a signal. Just need to figure out how to decode it.

Some instructions and a battery in the packet would be helpful, but worked pretty readily on my raspberry pi 4 without too much trouble.

As some have said the remote says, we were told to get CR 2025 batteries. It looks like the others saying we should be getting 2032s though. As there has been some push back, I added an image of the back of the remotes I've received as they all say 2025s.Edit: The post saying to not punch out that extra part is incorrect. This does fit a 2025 but you need to pop out the small plastic bits from the tray

I received two remotes, two modules and two sensors as described. Using the sensor and module hooked to an Arduino Uno I was able to read the IR codes from my multitude of remotes so I can build a customized remote with an Arduino to control all my audio/video stuff. Works perfectly with the "IR Remote Library by Ken Shirriff" on the Arduino. It is very easy to build a project to use the included remote to send codes to operate multiple relays with an Arduino and a relay shield. Very happy with this purchase.

I assumed that it was going to come with a battery (the remote even has the plastic piece you would pull out from the battery compartment so the battery inside the remote will make contact with the pcb) since the only place to see that it doesn't include batteries is at the very bottom of the listing in parenthesis and small print.This should be stated more clearly as I don't keep those specialized batteries on hand. I bought this kit specifically for the remote, and it is inconvenient when it doesn't work right out of the box. The strange thing is that there's an added plastic piece that is an adapter for a smaller battery to fit in the larger compartment, such as a "357" size battery. That means in order to fit the CR2025 battery that the remote control states to use, you will have to cut out the extra plastic piece while hopefully not destroying the main part.TLDR; Didn't come with a battery. Will have to cut battery compartment to fit required battery. I won't be using this seller again.

The sensor works. Using a commercial TV remote, the signal was decoded correctly almost all the time.Arduino was not able to read reliably codes from the remote came with purchase. Sometimes it reads correctly most of the time, but other times it does not read half of the time. Distance between the remote and sensor also matters. When too close or too far the code from the remote came with the purchase did not read reliably.I had to cutaway part of the plastic on the battery holder in order to place a battery inside and so cannot return.

Connecting the IR receiver board, jumpers, and the IR receiver chip to my Raspberry Pi 3 Model B was easy and worked with LibreELEC Kodi very simply. I followed LibreELEC's documentation and had my Pi working with the remote from an old DVD player. Easy-peasy!

Works as intended, no problems