RECOMMENDED USE: Alerts staff to attempted bed, chair or toilet seat exits by high fall risk patients. Lightweight compact fall alarm. Compatible with all Posey sensors. Five alarm tones. Battery operated with 4 "AAA" batteries (included). Over-molded impact absorbing case. SUSPEND allows extra time for administering care without alarm activation. HOLD allows resident to be away from the alarm without having to turn it off. Nurse call interface. No power switch model (8374NP) eliminates unauthorized shut-off.