AJAX CombiProtect User Manual page 12

If the detector is torn off from the surface or removed from the attachment
panel, you will receive the notification.
Do not install the detector:
1. outside the premises (outdoors);
2. in the direction of the window, when the detector lens is exposed to direct
sunlight;
3. opposite any object with the rapidly changing temperature (e.g., electrical
and gas heaters);
4. opposite any moving objects with the temperature close to that of the
human body (oscillating curtains above the radiator);
5. opposite any reflective surfaces (mirrors);
6. at any places with fast air circulation (air fans, open windows or doors);
7. nearby any metal objects or mirrors causing attenuation and screening of
the signal;
8. within any premises with the temperature and humidity beyond the range of
permissible limits;
9. closer than 1 m from the hub.
Check the operational capability of the CombiProtect detector on a regular
basis.
Clean the detector body from dust, spider web and other contaminations as they