1099 - 1096 - Respond to alarms; Remark:

Do not operate the instrument at temperatures lower than -20°C, higher than 50°C, or at humidity higher than 98% at 40°C.

Wear the instrument at all times while on duty.

The instrument is highly sensitive to changes in ambient background radiation and may ‘chirp’ when moving from an open (e.g., street) to a closed space (e.g., building).

When in use, do not keep instrument near radio-emitting sources (e.g., cell phones) to avoid false alarms.