Feature: 1. With a compact body, it is lightweight and portable, and can be easily held for measurement in various situations. 2. Dual alarm, it supports dual alarm prompts of sound and light, and can prompt when the gas concentration exceeds the standard. 3. LCD display, its screen is clear, supports backlight function, and can detect in the dark. 4. Electrochemical sensor, it is sensitive and can quickly sense data when detecting gas. 5. It is suitable for detecting and searching for combustible gas in almost all situations with combustible gas, fog and residue. Specification: Item Type: Gas Detector Weight: Approx. 630g / 22.2oz Material: ABS Sensor: Electrochemical Display Mode: LCD Display (with Backlight) Measuring Range: 0-1000ppm Measurement Error: ±5% Resolution: 1ppm Sensitivity: Not Adjustable Response Time: Less than 30 Seconds Sampling Method: Diffusion Type Alarm Method: Sound/Light Alarm Value: Adjustable Continuous Working Time: About 6-8 Hours Environment Temperature: 0-50℃ Product Size: Approx. 68x25x120mm / 2.7x1.0x4.7in Battery: 3x1.5V AAA Dry Battery (Battery Not Included) Purpose: It is suitable for detecting and searching for combustible gas in almost all situations with combustible gas, fog and residue. Such as: gas pipeline, propane flushing station, cabin oil leakage, exhaust gas and fuel oil leakage, leakage of inspection ports, etc.. Package List: 1 x Host (Battery Not Included)1 x Manual1 x Suitcase