Method and device for installing wallboard over a previously installed junction box

摘要: A method for installing a sheet of wallboard over previously installed junction box includes the steps providing magnet and magnet-sensing device adapted to produce human discernible signal when placed against an outwardly facing side in close proximity magnet. The proceeds by mounting on box, searching moving along until sensor produces signal, then cutting opening at location box. housing supporting electrical circuit that is located behind wallboard. One such light-emitting diode magnetically actuated switch, it be mounted routing tool position enabling user search with while holding ready cut hole located.