The infrared anti-theft alarm, consisting of an infrared detection circuit and an alarm circuit, is a practical self-defense deterrence warning tool.
红外线现场防盗报警器由红外探测电路及报警电路组成，是一种实用的自卫队性威慑报警工具。
The utility model relates to an alarm zipper which is composed of a zipper and an alarm circuit. The alarm zipper belongs to the field of the human necessities.
本实用新型是一种由拉链和报警电路组成的报警拉链，属人类生活需要领域。
A real-time clock circuit(X1228)is applied to be an hourmeter, data memorizer and alarm in speedometer.
实时时钟电路（X1228）被用作里程表，数据存储器和车速表中的警报。
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