FATMAX Stud Sensor 300, Battery, 9 VDC

Features : Backlit LCD screen clearly displays all of the sensor's readings, even in low light conditions | Wood and metal stud detection through up to 1 1/2 in. deep surface material | AC detection identifies live wires up to 2 in. deep | OnePass Center-Find technology locates stud centers | Deep metal scan senses metal through up to 3 in. of material | Auto calibration | Marking channel helps improve accuracy of marking-out readings | Ergonomic design and soft grip buttons provide comfort and control