Used in real-time monitoring of the connection status of ground wires in electronic workshops
BFN-NGM-II motherboard, version: A1903 BFN-NGM-II-LED board (the lamp board uses new LED digital tubes), version: A1801.
BFN-NGM-II motherboard, version: A1903 BFN-NGM-II-LED board (The lamp board uses low-brightness dual-color LED lamps and new LED digital tubes), version: A1801. Applicable customers: Panasonic (C00034533), Dahua (C00034480).