Features: High Sensitivity Sensor: The ANENG GN803 Combustible Gas Leak Detector is equipped with a gas-sensitive semiconductor sensor. It offers a detection range of 300-10000 PPM, ensuring highly precise measurements of potentially harmful gases. Intuitive Alarm System: Designed for maximum safety, this detector promptly alerts users when gas levels exceed safe limits. It uses a screen simulation bar display and beep signals to enable immediate action. Adjustable Sensitivity Levels: The device offers the option to switch between high and low sensitivity levels based on the environment, making it versatile for various scenarios. Detects Alcohol Ethanol: Featuring a premium high-precision gas sensor, it can accurately identify alcohol ethanol, highlighting its utility in diverse situations. Flexible Metal Hose: The bendable, all-metal hose allows for long-distance detection, providing greater convenience and making this detector an essential tool for safety and precautionary measures. Specifications: Model: ANENG GN803 Sensor: Gas-sensitive semiconductor Detection Range: 300-10000 PPM Response Sensitivity: Battery: 1.5V AAA Battery*2 (not included in the package) Operating Environment: 0~50°C / 20~80%RH Warm-up Time: Approximately 30 seconds Storage Environment: -10~60°C / 20~80%RH Sensitivity Adjustment: High/Low Alarm Method: Screen Simulation Bar Display, Beep Prompt Response Time: 500 PPM: Approximately 2 seconds Package Included: 1 x ANENG GN803 Combustible Gas Leak Detector (NO BATTERY) 1 x Storage Bag 1 x Screwdriver 1 x User Manual