... Hotel Keypad Lock 1. Keypad security lock2.Low voltage alarm 3.Low energy consumpition 4.CE,FCC certificated Basic Function -Four levels ... certain room.-Usage options: service card and guest card open lock independently or have to be used together. -With low voltage ... -20~+55Lock types4000EM,4000TM,2000EM,2000TMColorsGolden, black, red Glass cabinet lock, remote cabinet lock, glass cabinet key lock