Order # 50493209 Manufacturer# 75049 Brand AliMed Manufacturer Alimed Application Chair Sensor Pad Alarm System Power Source Battery (9V) UNSPSC Code 42143607 Sounds when embedded pressure sensor detects patient attempting to leave chair Comes with the same alarm unit as does our AliMed, Pressure Sensor Pad, but differs because the sensor is sandwiched between 3 Inch, of fire-retardant cushioning foam The alarm has an on/off switch and the volume can be on soft (85 dB) or loud (100 dB) Unit features alarm and chime tone and low battery warning