How to make a motion detector from alarm parts?

Question

Do it yourself

Good day. It is necessary to buy / develop, if necessary, a device that is simple in its essence. There is an IR detector on the street at the door (like this: www.aliexpress.com/item/Wireless-PIR-Detector-for-... ). It is necessary to develop\find\buy a basic simple station that picks up the "alarm" signal from the detector and starts to "beep". He himself worked with MK, but did not work with radio transmitters / receivers. Maybe someone will advise a ready-made module or a way to implement my idea. Thank you.

Answer 1

The site says that the detector has a radio transmitter at 433 MHz or 315 MHz.
For example, for the Arduino family (if they suit you, especially since Chinese clones are now cheap and available), there are ready-made receivers (and transmitters too) everywhere, both at 433 MHz and at 315 MHz (googled even for the request "arduino 433") , there are also code examples.

Answer 2

You can make everything much easier - buy both the station and the client. For example, a wireless bell, the "button" of which is closed by your volume sensor.
The interface of your wireless transmission is probably adjusted to some kind of signaling, so it will be cheaper to solve the problem not with a base station, but with a radio pair)

Answer 3

infa