Alarm Alert Chair Sensor Pad will last 1 year * Designed to be used with Alarm Alert Alarms by Blue Jay (Models BJ115205 and BJ115305) * 7" X 15" * Plug the sensor pad into the alarm * Position: Place the pad under the patients buttocks on a chair, wheelchair, geri chair or other chair * Alarm will sound when the patient removes their body weight from the sensor pad * Write the patients name, start date and end date with a soft felt tip permanent marker * Limited 1-year warranty *