TIF Leak Detectors have innovative MPC circuitry and Advanced Digital Signal Processing that monitor the sensing tip up to 2000 times per second. Automatic reset, true mechanical pump and visual indicators speed and simplify leak searches. Features: - Less than 0.1 oz./yr. (3 gr./yr.) ultimate sensitivity - Tri-color, six segment visual leak size indicator displays 18 alarm levels - Seven levels of sensitivity adjustment provide an increase of up to 64x - Battery test function with true voltage indication - Mute feature silences audible alarm - True mechanical pump provides positive airflow through sensing tip - One-touch reset - Tactile keypad controls - Microprocessor controlled circuit with ZZ Advanced Digital Signal Processing - Cordless and portable, operates on two C-cell alkaline batteries - Variable frequency audible alarm - Constant power indication - 14" stainless steel probe with Teflon liner - Carrying case included - 3 year warranty