This switch will suit the Modular Burglar Alarm circuit. However, it also has other applications. The Keypad must be the kind with a common terminal and a separate connection f ...
This is a complete alarm system with 5 independent zones suitable for a small office or home environment. It uses just 3 CMOS IC's and features a timed entry / exit zone, 4 imm ...
The Keypad must be the kind with a common terminal and a separate connection for each key. On a 12-key pad, look for 13 terminals. The matrix type with 7 terminals will NOT do. ...
电路由微波传感组件TWH9248／TWH9249、单稳态延时电路、语言报警电路、调频发射电路以及电源电路等组成。
当有人从警示牌有效监视范围走过时，本电路会发出“铛……禁止吸烟，禁止烟火”的警告声.
SX-3型人体感应开关是根据多普勒效应来工作的微波控制组件。它采用板式结构，其外形尺寸为100mm×50mm，其探头和信号处理部分可以裁成两个部分，便于遥控探测时使用,可用于报警器、自动门、 ...
