HABOTEST HT56 Pro Pen-Type Stretchable Gas Leak Detector with Audible and Visual Alarms Highly Sensitive Sniffer Natural Gas Detector to Locate Combustible Sources Like Methane Acetone Acetylene Alcohol Propane for Home This meter is a combustible gas leakage detector, which is used to detect the leakage of combustible gas quickly and reliably. Features: FAST-RESPONSE GAS-SENSITIVE SEMICONDUCTOR SENSOR: Utilizing high-precision gas-sensitive semiconductor sensors, capable of measuring various combustible gases. HIGH/LOW SENSITIVITY SELECTION: Provides more precise detection of combustible gas leaks. AUDIBLE AND VISUAL ALARMS: Utilizes analog bars, red backlight, and audible alarms as triple warning methods. When a combustible gas leak is detected, the instrument emits a beep, the concentration analog bar increases, and the screen backlight changes from green to red. AUTO-POWER OFF: The instrument will automatically power off if there is no operation within 5 minutes. LCD DISPLAY SCREEN: In low-light conditions, the data is clearly visible, making it easy to monitor the current working status of the instrument. Specifications: Model: HT56 / HT56 Pro (Optional) Material: ABS Sensor: Gas-sensitive semi-conductor Range: 100~1000ppm Reactions Sensitivity: Approx. 1%LEL (100PPM)(methane) Display: LCD Automatic Power Off: Yes Low Battery Indication: Yes Dual Color Backlit: Yes Sensitivity Selection: Yes Buzzer Alert: Yes Warm-Up Time: Approx. 30 sec Response Time: ≤500PPM: Approx. 5 sec; ＞500PPM: Approx. 2sec Alarm Mode: Visible and audible Operating Conditions: 0℃~50℃ / 20~80%RH Storage Conditions: -10℃~60℃ / 20~80%RH Power Supply: 2 * 1.5V AAA battery (Not included) Safety Rating: EN61326-1 Extend Size: 310 * 24 * 28mm / 12.20 * 0.94 * 1.10in Normal Size: 205 * 24 * 28mm / 8.07 * 0.94 * 1.10in Item Weight: 62g / 2.18oz Package Weight: 129g / 4.55oz Package Size: 25.5 * 6.5 * 4cm / 10.04 * 2.56 * 1.57in Package List: 1 * Pen-type Gas Leak Detector 1 * User Manual (English)