Continuity tester works great but any meter can do that. The clay stick was used for the first time recently. The thing works when held in the air five feet from any circuit. You get what you pay for and this is the cheapest deal on the market.
Cable Vention Jack 3.5 mm - 2xRCA (P550AC-S), 1.5 m, ice blue
6 Review
π BOOGIIO Cable Tracker+Wire Tester
3 Review
Enhanced Fluke T6 1000 with FieldSense Technology for Electrical Applications
5 Review
NOYAFA Underground Portable Detection Electrical: Unearthing Efficient Electrical Solutions
6 Review