This pressure-sensitive bed alarm with reset button by Drive Medical alerts caregiver whenever a patient rises from a chair. The pressure-sensitive pad connects to the audio alarm, which features a safety alert, On/Off switch and low battery warning. Four AA batteries are included to operate the alarm. The bed-sized pad is 11" x 30". The product's warranty is 6 months. (Also available without a reset button and/or with a bed-sized pad.)