D1 Mini ESP32 + DFRobot SEN0395 wrapped around an Apple form factor wall wart.
For my money this is the perfect bathroom occupancy sensor. Bathroom outlets are usually about chest high and in my house face the toleit and shower areas. It even works when behind a hanging hand towel.
I'm using ESPHome with Home Assistant.
BOM:
The author marked this model as their own original creation.