... .Signal and model selection: ModelMounting methodWiringSignalFA131AΦ42~Φ54 pipewith connectorAsynchronous serial port output,baud rate 300, eight bit data, no parity, one ... .32Open collectorFA135BSelf-balancedconnecting cableFA135DG3/4” whorlCommunications cableCommunication cable RVVP / 5 pin / 0.5mm ² / copper / low-temperature shield cord, the default wiring ...