I need to create a momentary switch which is controlled remotely, preferably through IR from an old TV remote control (if possible), in order to answer my office door buzzer without getting up.
On the panel for the buzzer, there is an unlock push button, which opens the door while you hold it pressed, and locks when you release it, so I would like to keep this functionality but add an IR receiver which would do the same in parallel.
So far, this is what I've found: https://www.aliexpress.com/item/IR-DC-5v-Remote-Control-Switch-1-Channel-Relay-Module-Board-With-1-key-Infrared-WirelessTransmitter/32654853261.html?spm=2114.40010308.4.148.9TTPdO
My problem is that the product is not sufficiently documented, so I'm worried about the exact pinout and wiring of the device. There is a pinout but it's in Chinese and is not documented properly. If anyone has had experience with one of these, could you please explain its pinout and functionality, so that I know what I'm buying and how I'm going to use it?