SubSurface - Model LD-12 - Professionals Water Leak Detector - Operation Manual

The LD-12 consists of the following component items and standard accessories: Ground microphone and handswitch (mute) with three (3) pronged base and forty (40) inch long sensor cable Amplifier with power switch, volume control, meter display of sound intensity (and battery power), adjustable low and high frequency filters, Limitter switch, Filter-Thru switch, and Lights switch.