Item No.: C23A227
.Detectors 90-250V at 50-60Hz within 6 inches (150mm) of a hot unshield wire
.Detects wood up to 3/4 inch (18mm)
.Auto calibration stud detection
.Four LEDs visual and audio indicators
.Operated by one 9V battery (battery not included)
.Product size: 5.5*3.0*13cm