Motion sensor in the motor home

Use a PIR sensor connected to IN1 or IN2

Concealed PIR sensor

It has several settings and can be hidden easily without being too aesthetically intrusive.

White PIR sensor, horizontally and vertically adjustable

link
BROWN: +12V
BLUE: NEGATIVE
WHITE K1: +12V
WHITE K2: IN2 CAMPERCHECK

To be concealed with twilight

If you need the twilight function, this small sensor may be a good choice.

Unobtrusive

It has an easily fixed plastic container and is small in size.