1, Avoids drilling or cutting into unseen hazards in walls, floors and ceilings.2, Electronically locates cables, gas and water pipes, electronic conduits and steel joists.3, Detects mains power and traces breaks in circuits and cables.4, Audio and visual indicator system with battery low warning light.5,D Metal test: 15mm diameter steel tube,24mm depth6,W Voltage mode: AC 100V electric wire(40mm depth)

wall metal detector LRD18