12V MAX 1.5 Ah Cordless Lithium-Ion Handheld Wall Scanner - DCT419. 12V MAX Lithium-Ion Battery - DCB201. 12V MAX 1-Hour Charger - DCB100. Carrying Case. Sensing technologies detect five classes of embedded materials - wood, ferrous metal, non-ferrous metal, plastic and unshielded live electric - behind wall surfaces up to 3 in. deep. Scans through multiple wall surfaces including drywall, plywood, concrete and ceramic tile. Automatic mapping feature processes all embedded materials simultaneous