Features: The HLD-100+ Gas Leak Detectors is a highly reliable tool for detecting halogen leaks in HVAC systems, featured advanced negative sensors technology for precise and efficient leak detection. This Detectors boasts intelligent microcomputer controller with a double color LED, adjustable sensitivity across seven level, and automatic alarm system to users of excessive refrigerants leaks. Suitable for HVAC technicians, automotive mechanics, and refrigeration specialists, this portable device ensures accurate and detection of refrigerants leaks in various systems. Perfect for use in automotive air conditioning repair, home refrigerator maintenance, and commercial HVAC system inspections, the HLD-100+ adapts to diversely environment with ease. The HLD 100+ not only simplifies maintenance but also enhances your workflow efficiency. Specifications: Component:Plastic+Stainless Steel Size:Approx.92x20mm/3.62x0.78inch Package Includes: 1 Set Gas Leak Detectors note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.