您要查找的是不是：
- 电源程序开关,中间断开,左右均接近,可作消防开关。Power-source programmed switch can cut off in between and cut in both the left and right which can be used as extinctive switch.
- 消防开关<装在大楼外面fireman's switch
- 开关power switch
- 接近开关proximity switch
- 空气开关air-break switch
- 限位开关limit switch
- 总开关master switch
- 微动开关MSW
- 压力开关pressure switch
- 自动开关recloser
- 安全开关safety switch
- 脚踏开关foot (pedal) switch
- 选择开关option switch
- 控制开关pilot switch
- 组合开关switchgroup
- 液位开关liquid level switch
- 保护开关protection switch
- 你按错了开关。You pressed the wrong switch.
- 电源总开关battery main switch
- 分接开关tapping switch
