你即將離開本站

並前往https://home.howstuffworks.com/home-improvement/household-safety/burglar-alarm.htm

How Burglar Alarms Work | HowStuffWorks

The sensor registers a drop in light levels and sends a signal to the control box. More advanced security systems include passive infrared (PIR) motion ...

確定！ 回上一頁

查詢 「Burglar alarm system」的人也找了：

  1. Burglar alarm
    2.
  2. security alarm中文
    3.
  3. Home alarm system
    4.
  4. Smart security system
    5.
  5. Security system
    6.
  6. burglar中文
    7.