Complete system includes 1 bed alarm, 1 bed sensor pad and 1 chair sensor pad. Use these products for fall prevention; know when someone is getting out of a bed or a chair unattended. Place the bed sensor pad 30 inches across the width of the bed, under the fitted sheet. Position the pad under the shoulder blades for an alert when the resident sits up or position the pad under the hips for an alert when the resident is lifting out of the bed. Place the chair sensor pad on the seat of a firm chair. Alarm will sound when the resident is lifting out of the chair. The alarm beeps when weight is applied, to let the caregiver know the system is working. The alarm will sound continuous when weight is removed from the pad. To silence the alarm, press the rest button on the side of the alarm or reapply weight to the sensor pad.All items carry a 1 year manufacturer warranty.