Components: Includes Control Unit with power switch, 4 “AAA” batteries, wire bracket, wall/ wheelchair bracket and saddle bracket.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 tourn it off.Nurse call interface.