6
d
Best sensitivity
Worst sensitivity
✗
✓
Choose a position where an intruder would
be most likely to pass across the face of the
unit. Having decided on a position mark
and drill a single fixing hole. Fit the plug
(if necessary) and screw provided. The screw
(with head left 2.5mm proud of the fixing
surface) engages with the keyhole fixing on
the back of the case (see fig 2).
TG115/115R_Insts.qxd 2/5/06 4:45 pm Page 6
