Features state-of-the-art infrared sensor technology. Certified to meet new SAE J2791 standard for electronic refrigerant leak detectors. Optimum sensitivity detects leaks down to 0.03 oz/year User selectable, three-position sensitivity switch minimizes false triggering and allows for easy diagnosis of small, medium and large leaks Sensitive to R-12, R-134a and all other HFC refrigerants High-efficiency air sampling pump provides quicker response and clearing Audible alarm and multiple LEDs help locate leaks fast NiMH battery provides over six hours of use between charges. Detector also works with AC and DC power adapters (included) On-board diagnostics indicate battery charging status, low battery condition or sensor failure Includes replacement filters, rechargeable NiMH battery, 120 VAC power adapter, 12 VDC power adapter with cigarette lighter plug and rugged carrying case