Feature:1. High Sensitivity Detection: HVAC leak detector features advanced helium and Freon sensitive technology, quickly and accurately detecting tiny gas leaks to ensure timely problem identification.2. Versatile Compatibility: Supports multiple refrigerants including R22, R410A, R134A, R1234YF, as well as CFCs, HCFCs, HFCs, meeting the needs of different equipment and offering wide application range.3. Long Lasting Durability: Made with quality materials and strict craftsmanship, ensuring product reliability and durability in various environments, providing long term performance for your work and reducing maintenance costs.4. Fast Response Time: Instant response time, ensuring efficient detection of refrigerant leaks and timely alerts for prompt action, enhancing overall safety and performance.5. 7 Grade Sensitivity: Car air conditioning leak detector with 7 levels sensitivity adjustment, allowing precise detection for different gas types and leak sizes.Specification:Item Type: Refrigerant Leak DetectorMaterial: ABSMaximum Sensitivity: 6gr/yrResponse Time: InstantaneousSensitivity: 1-7 levelsProbe Length: Approx. 20cm / 7.87inDetector Battery: 4 x Triple A battery (Shipped without batteries)Battery Model: LR03Fitment: Used for HVAC Air Condition R22 R410A R134A R1234YF.Package List:1 x Refrigerant Leak Detector1 x User Manual1 x Storage Bag