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 *