Quick-Alert Ultra Monitoring System: This Alarm Has An Auto-Start Safety Feature That Activates The Alarm When A Patient Is Being Sensed. It Has A Protective Silicone Cover That Helps To Reduce Unintentional Breakage. Our More Durable Electronic Design Resists Wear And Tear And Stands Up To The Static Interference Found In Many Facilities. The Alarm Has A 30- And 90-Day Warranty On Pressure Mats. For Bed And Chair Use. Polyethylene Covered Pressure Sensor Mats Are Fluid Resistant, Yet Breathable To Help Maintain Healthy Skin Conditions. 90-Day Chair Sensor Mats.