The GD-02 combustible gas detector is designed for methane gas detection and environmental temperature and humidity monitoring, with high precision, long life and excellent low temperature resistance. The device not only supports flexible adjustment of gas concentration thresholds to meet the needs of different environments and safety, but also allows users to select appropriate concentration units according to specific application scenarios to ensure the accuracy and practicality of measurement data. The general settings page provides alarm settings (switch indicator, vibrator and buzzer), threshold settings (high and low alarm options and numerical adjustment), language switching (Chinese and English), style switching (dark/light mode) and unit switching, etc., which are easy to operate and meet diverse needs. The system settings page supports date and time adjustment, sleep settings, brightness settings, factory reset and volume settings. It is easy to operate and has comprehensive functions. Screen Material: 2.0-inch Color Screen Detectable Gases: Methane, Propane, Isobutane Measurement Range: 0-50000ppm (Methane), 0-100 (A%LEL) Resolution: 1ppm/1%LEL Measurement Range (%LEL): 0-100 Operating Temperature: -10°C-55°C Warm-up Time/Response Time: Around 15-16 seconds (T90):Less than 5s Recovery Time (T10): Less than 10s Service Life: Greater than 3 years Sampling Time: ≈0.5s (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 x Gas Leak Detector