Three-in-one detector 

Functions:

* measuring AC, measuring metal, measuring wood

* measuring current: detection depth ≥ 50mm, detection voltage range: 220v / 50Hz; (12MM thickness nylon plate surface)

* metal measurement: detection depth ≥ 34mm (19MM diameter iron pipe, 12MM thickness nylon plate surface)

* Wood measurement: detection depth ≥ 30mm (40MM width solid wood, 12MM thickness nylon plate surface)

* low battery detector

* auto power off