We strive to provide new innovative products to meet the need of the rapidly changing world we live in. Our goal is to provide products made with the finest material and consistent and high quality processes. Features Green-On, Red-Alarm, Red/Green-Fault, Red Red/Green Green - End of Life During Alarm Move to Fresh Air, Call 911 Replace By: 60 Months After Sale Test Weekly - Press Test Switch Specifications Color: White Voltage: 12V