详细规格及用途描述

-Reliable Passive Infra-Red detector with a solid state door bell and alarm sound.
-Can be easily installed on a wall or ceiling or simply placed on a desk top.
-Powered by a 9V Alkaline battery or 9V DC adaptor.
-Unit can be easily adjusted and aimed to accommodate almost any location.
-8 meter range with 120 detection angle.
-Plug and wires supplied to connect to a push button as door bell unit.