Can also be used to external lighting and signal device and vehicle lamps shell protection.
也可用于外部照明和信号装置及汽车灯具外壳防护。
2
The paper gives solutions to the problems with lighting circuit of permissive aspect of block signal of existing automatic block section according to relevant specifications.
通过对现有自动闭塞区间通过信号机容许信号点灯电路存在问题的分析，根据相关规范，提出解决办法。
3
Electrical circuit for the air-conditioned rooms, passenger and goods lifts, general and other equipment failures, lighting, sound, the signal can also be used to connect ON / OFF auxiliary contacts.