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 0.25 oz./yr. (7 gr./yr.) ultimate sensitivity - Six-segment visual leak size indicator - True mechanical pump provides positive airflow through sensing tip - High and low sensitivity levels - One-touch reset - Tactile keypad controls - Detects all halogenated refrigerants - 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 - 2 year warranty