这种车锁在现有的车锁基础上安装一个微型常闭开关、纽扣电池以及报警蜂鸣器，并通过导线进行电路连接。
Compared with the prior bicycle lock, the utility model is additionally provided with a micro normally closed switch, the button battery and the alarm buzzer which are in line connection by wires.
当没有通道被选中时，每组开关的第一个通道（常闭）被连接到一个输出端口。
When no channels are selected, the first channel of each bank, which is normally-closed, is connected to an output port.
①分别接通各个接触器，依次拨通相应的限位开关和过电流继电器常闭触头，查看其切断控制电流的能力。
Respectively through the various contacts, in order to dial the corresponding limit switches and over current relay normally closed contacts, to see the ability to cut off the control current.
这两种集成PNP开关输出可自由编程，允许用户调节限定值，滞后和功能型(常闭或常开)的需要。
Both integrated PNP switch outputs are freely programmable, allowing the user to adjust the limit value, hysteresis, and functionality type (normally closed or normally open) as needed.
这两种集成PNP开关输出可自由编程，允许用户调节限定值，滞后和功能型(常闭或常开)的需要。
Both integrated PNP switch outputs are freely programmable, allowing the user to adjust the limit value, hysteresis, and functionality type (normally closed or normally open) as needed.
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