Specifications Amplifier Size: 6.7" x 2.8" x 4.1" (17.0 cm x 7.1 cm x 10.3 cm) Amplifier Weight: 2.0 lbs (0.9 kg) Input Power: Six (6) AA dry cell batteries Battery Life: 28 hrs (backlight OFF), 14 hrs (backlight ON) Frequency Range: 100–1200 Hz (13 dB) Filter-Thru OFF; 15–30,000 Hz (13 dB) Filter-Thru ON Amplification: 62 dB ±3 dB Input Impedance: 50k ohms Output Impedance: 15 ohms Power Consumption: 70 mA (backlight ON), 35 mA (backlight OFF) Amplifier Warranty: 4 years ABS Carrying Case Size: 18.5" x 14.6" x 7.5" (47.0 cm x 37.1 cm x 19.0 cm) ABS Carrying Case Weight: 16.4 lbs (7.43 kg) Product Description The LD-12 Water Leak Detector is an analog system for precise underground leak detection. Its analog backlit display shows sound intensity in real time, while the built-in filter system allows operators to focus on leak signals and suppress background noise. Users can choose between six filter settings or use the Filter-Thru switch to access the full frequency spectrum from 50 Hz to 15 kHz. LD-12 comes with six “AA” batteries that provides up to 28 hours of operation, and a limiter function to prevent exposure to loud noises. Built of durable aluminum, it is backed by 4 years warranty. In the Box Amplifier with meter display, filter controls, limiter, and Filter‑Thru switch Ground microphone with handle and 40″ cable Aviator‑grade stereo headphones Magnet base for hydrants/valves Three‑section contact rod for fittings or meters Nut driver, padded carrying case, 6 AA batteries, and instruction manual
