There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors ... a common 433 MHz receiver module to an ESP32 or ESP8266 ...

By using these ... to form the module. High level output (3.3V) of pre-settable variable width (5Secs -18 Minutes) is provided. Circuit diagram of the PIR Motion Sensor Light and Switch based on ...