2020.1.13
A power supply device signal outdoor
Signal: AC220V
Switch machine start-up circuit: AC380V
Switch indication circuit: AC110V
Track circuit: AC110V
Second, the amount of wiring between the outdoor device and the signal distribution board
Signal: 3 corresponds to each bit line of the lamp
Switch machine
Track circuit: four wires, two transmitting end, the receiving end 2.
Sending and receiving end of the track circuit model are indoors.