The Personal Sentry is an easy to use, compact monitor that mounts to the back of a wheelchair using the built-in spring clip. Low battery indicator LED light. UMP Personal Sentry Economy String Monitor High (95 dB) and low (85 dB) volume switch.
The monitor comes with a sturdy, metal mounting clip, hinged battery cover and low battery indicator light..UMP Bed Sentry Deluxe Monitor Also includes a nurse call interface, AC adapter input and remote-only volume option to silence the alarm in room. Switches for high/low volume, four selectable tones and zero to two second delay are located inside the battery compartment.