Order # 83393209 Manufacturer# 909338 Manufacturer Skil-Care Application Replacement Under Mattress Sensor Pad Dimensions 20 X 30 Inch For Use With Bedpro and Multipro Alarm Units Type Bed UNSPSC Code 42143607 Sensor is under mattress and protected against incontinence Weight of mattress keeps sensor pad in place to reduce false alarms No sensor strip on mattress to compromise pressure relief and comfort Undermattress alarm system eliminates electrical contact with patient 180 Day sensor pad