Digital Signal Micro Processor Mute Function Visual Leak Level Indicator Reset Function Keypad Control Sensitivity Level Adjustment Battery Test Function Variable Frequency Audible Alarm Ultra Bright UV/Blue LED Light The Raptor Refrigerant Leak Detector with UV Blue Light offers state-of-the-art features and micro-processing technology while the design sensor delivers an accurate and instantaneous response. An ultra bright UV light is built into the end of the probe allowing for both electronic and UV leak detection of even the toughest leaks. Packaged in a blow molded case with UV glasses, 2 ìCî batteries and sensor tip.