# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Back-Up Battery | 备用电池
A backup power source, usually rechargeable, to provide power in the event of AC loss.
Bell | 警铃
The more common term given to bellboxes, external sirens etc.
Bidirectional | 双向的
These components can also receive feedback from the alarm panel and evaluate it themselves.
Bill Trap | 现钞捕捉器
A sensor that detects the removal of a specific bill in a cash drawer.
Blue Wave Technology (BWT) | 蓝波技术
The combination of different techniques/features (advanced signal processing and precision optics) safeguard against false alarms and improve immunity to interference.
Burglar Alarm | 窃报警
A word that is generally used by an end user but not by installers or manufacturers. See Intruder Alarm.
BUS | 总线
A distinct set of conductors carrying data and control signals within a system, to which pieces of equipment may be connected in parallel.
Bypass | 旁路
This used to describe the act of stopping an input from becoming armed/set. A wired input will still pick up an intruder but the alarm panel will not react to it - a wireless input will become dormant.
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