1、Fine Workmanship: This pipeline leak detector adopts a plastic body with fine workmanship, it is a precise and high end professional instrument and equipment. 2、Superior Performance: This water leak detector has superior performance, clear sound quality, strong sensitivity, and adopts imported components. 3、4 Gears Adjustment: Four gears adjustment can be used under different conditions and can be adjusted according to test requirements. 4、Working Principle: The working principle of the instrument is to rely on the shock wave of the physical sound source to transmit the sound and gradually amplify the sound until it can be heard normally in the ear, the larger the leak point of the water pipe, the better the effect. 5、Filter Noise: This leakage detector can effectively filter noise and detect the water outlet faster, which is convenient and practical. Item Type: Pipe Leak Detector Material: Plastic Gross Weight: 1401g / 49.4oz Product Size: Approx.6.5 x 3.5 x 11cm / 2.6 x 1.4 x 4.3in Battery (delivered with built in battery): lithium battery, model: 883759, capacity: 1200mah Working Time: 10-23 hours (depending on sound strength) Purpose: Water leakage detector Functions: Noise filter, sound peak limit, spectrum display, double sided probe, expansion hole features: Sound Filter(SOUNDFILTER): There are 0, 1, 2, 3 and 4 levels. Gear 0 is the gear in normal use, gear 1 emphasizes detection of bass, gear 2 emphasizes detection of treble, and gear 3 is mandatory detection. Volume Peak Limit (SOUND, LIMITERI): Function is turned on, the huge sound peak is limited, preserve the induction head and maintenance device, usually placed in an open position. Spectrum display a total of nine kinds of display interface, according to their own convenience, can also adjust the strength of the display function. Double Sided Induction Head: FL 550 adopts double sided induction design, two sides of the sound quality is different, according to the environment to determine which side is clear to use which side. The sensing sensitivity is more strong, the sound is clearer, and the sensitivity and service life are greatly provided. 1 x Host 1 x Sensor Head 1 x Earphone 1 x Plug 1 x USB Cable 1 x Aluminum Case 1 x Manual