The Arc Fault Detector (AFD) is an auxiliary device for electrical fire monitoring system. It monitors the arc fault signal of single-phase power circuit in real time.AFD only detects and sends alarm signals, it cannot cut off power by itself. It can connect to electrical fire monitoring host. When dangerous arc fault is detected, local sound-light alarm will be triggered, and fault data will be uploaded via RS485 communication. Widely used in fire protection engineering, commercial buildings, hotels, shopping malls and schools.