One hand operated tester for detecting the leaked gas indoors with its slim goose neck sensor, and alarm if gas leaks. It is widely used in environmental monitoring, petrochemical industry, sewage treatment, agricultural research, medical, etc. Features: The combustible gas detector has high sensitivity and quick response. High sensitivity sensor able to detect slight gas leakage, quickly find the leakage source. 318mm long goose neck is flexible to be shaped into different angles. Once detecting the leakage, it will indicate the leakage via alarming bulb. Apply in environmental monitoring, petrochemical industry, sewage treatment, agricultural research, medical, etc. Specifications: Material: ABS; Sensitivity: 50ppm methane; Sensor Type: Low power semiconductor; Warm-up Time: 60 seconds (25& 8451;, 60%RH environment); Response Time: 2 seconds; Operation Cycle: Continual operation; Alarm Limit: Lel 10% of methane; Low Battery Indication: 3±0.2V; Operating Environment: 0~50& 8451;(32~120& 8457;), 10~90%RH(non-condensing); Working Current: About 150mA; Power Supply: 3 * 1.5V AAA battery (NOT included); Flexible Tube Length: 318mm / 12.52in; Item Size: 132 * 68 * 27mm / 5.20 * 2.68 * 1.06in; Item Weight: 166g / 5.88oz; Package Weight: 224g / 7.93oz; Package Size: 24 * 15 * 5cm / 9.45 * 5.91 * 1.97in; Packing List: 1 * Tester; 1 * Manual Manual