The flow of current actuates the signal.電流發(fā)出了信號(hào)。DOES THE PEDAL DROP AS THE SOLENOID ACTUATES?當(dāng)電磁螺線管螺線管引動(dòng)時(shí)踏板落下了 嗎 ?Actuates an alarm when flow is inadequate, deactivates alarm when sufficient flow is restored.當(dāng)流量不充分時(shí), 啟動(dòng)警...