Only in the test mode / walk test mode (DIP switch 1 in the SA68P on) the detector reacts immediately and lights up the LED of a motion detector during movement.

ATTENTION:  Make sure switch 1 in the motion detector is always off (down) after testing.

The red LED will not be detected when a movement is detected.

If you leave the test mode / walk test mode activated, your battery is indeed empty in a short time