Chuango PIR-800 Manual Del Usuario página 6

EN
Power-Saving Mode: In working state, if the sensor is triggered twice
within 3 minutes, it will enter sleeping mode to save power. After
no movement within next 3 minutes, the sensor goes back to the
working state.
Installation & Notice
Wall-mounting:
Fix the bracket longitudinally on the wall, and put the detector on
the bracket. Choose to mount it at the entry and exit where the
intruder possibly breaks into. It is suggested to mount it at the
height of 2 m from the ground.
Ceiling-mounting:
Fix the bracket laterally on the ceiling upper the door or window,
and put the detector on the bracket.
Detecting distance:
Mount on wall Mount at ceiling