Features: High-precision gas sensor for accurate and reliable gas leak detection with fast response time. Detects a wide range of flammable gases, including methane, natural gas, propane, butane, and ethane. This gas analyzer pen provides visual and ble alarms when combustible gases are detected. Portable pen-type design, compact and lightweight, easy to carry and operate. Use this handheld detector in areas where a gas leak may be present and wait for the device to display current gas levels. Specifications: Material: Plastic Size: Approximately 170 x 28 mm (7 x 1 inch) for HT59, 158 x 28 mm (6 x 1 inch) for HT60 Type: HT59 or HT60 (optional) Measuring range: 0–1000 PPM Pre-heating time: 30 seconds Note: Please allow 1–3 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences between monitor displays, the image may not reflect the actual color of the item. Package includes: 1 x Gas Leak Detector