[LD-600]: Profession Portable Natural Gas Detector. Compared with the traditional leak detector, its sensor has longer life. Higher detection accuracy, easy to operate and can detect a range of combustible. Capable of detecting , Ammonia, Butane, Methane, Natural gas, , Jet Fuel. This handheld gas detector for residential or commercial HVAC needs. Flexible probe can used to detect in a narrow space. [EASY to OPERATE]: LD600 Natural Gas Detector With five-key design and it allows to fast reset, mute, power on/off, adjust sensitivity, mark the value of leakage and makes LCD screen visually display the leakage level and device status in one simple click. Latest TYPE-C charging port and 2.8 inch color display. Battery life: The built-in 3000mAh rechargeable battery provides continuous 6 hours working time. TYPE:Air Conditioning Refrigerant Leak Detector For car and household air-conditioning and equipment FUNCTION:LD600 Natural Gas Detector Three Levels of Sensitivity Adjustment:Sensitivity:100ppm(100ppm-1000ppm)/yr Operating environment:-10-52, relative humidity (10% - 85% RH) Storage temperature:-20 to 60 (-4 to 140) Alarm mode:sound and light alarm,LCD display Rechargeable lithium battery:3.7V 3000mAh Working time:continuous 6H Sensor life:10 years refrigeration. Colour:Blue & Black Material:ABS Size:7.9x3.3x1.5Inch Package Contents: 1 * Air Conditioning Refrigerant Leak Detect Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.