[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 wider range of combustible. Capable of detecting Acetone, Ammonia, Butane, Methane, Natural gas, LPG, 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 peak 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.