@Robin_De_Lange Here is my implementation inside a small plastic enclosure:
Input power supply 5V.
Left - Aqara Door/Windows sensor. (3V)
Centre - Voltage step down from 5V to 3.3V
Right - HLK-LD2410B (5V)
Note: Simplify with voltage step down can use a AMS1117-3.3 (output 3.3V), there are many other methods too.
Since this is using HLK-2410B, all configuration done via bluetooth, application available in android and IOS.
