Power supply: DC9V dry battery Battery life: about half year detecting area: Vertically: 60A?, horizontally: 110A? Bracket horizontal adjusted angle: - 45A? ~ + 45A? Bracket vertical adjusted angle:-45A? ~ +45A? Temperature range:-10A? ~ +50A? ... - Update: 2008-05-28

Power supply: AC 220V; AC230-240V ; DC9V battery Working frequency: 315MHz/433MHz Alarm current: 85 % Working temperature:-10~ 45a?? Size: 145x100x 42mm N.W.: 160g - Update: 2008-05-28

Record your own personal message for ten seconds Up to 6 telephone numbers can be pre-stored in the unit and dialed to summon help in priority order. Remote command and access to the system from anywhere via a telephone/mobile Emergency/panic butt... - Update: 2008-05-28