operation manual

38
Replacing batteries
For mounting the device using screws proceed as fol-
lows:
• For mounting the device on hard surfaces, mark
the screw holes (D) at a distance of 70 mm from
the desired position on the window/door frame
(see figure 6).
• If you are working with hard surfaces you should
pre-drill the holes marked using a 1.5 mm drill. This
is not necessary for soft surfaces (see figure 6).
The screw holes (D) do not need to be pre-drilled.
Simply screw in the screws through the plastic.
• Place the electronic unit (A) to the desired
mounting location and turn both screws supplied
into the window/door frame using the bore holes
(see figure 7).
• Place the cap (B) to the electronic unit.
6 Replacing batteries
If an empty battery is displayed via the app or the device
(see “7.4 Error codes and flashing sequences” on page
41), replace the used batteries by two new LR03/
micro/AAA batteries. You must observe the correct
battery polarity.