WJL6000 Leak Detectors with LED Identifies halide refrigerants with LED indicator and adjustable sensitivity for precise, taskspecific detection. Fast reset time of 2 to 10 seconds and continuous operation for HVAC systems, laboratories, and industrial maintenance. Precisionstabilized circuitry with low power consumption and sensors; extended battery life of 50 hours; adjustable sensitivity to optimize detection accuracy. Operates from 0 to 52°C with automatic calibration; detects CFCs (R500), HCFCs (R502), HFCs (R134a/R404a), and mixed refrigerants. Essential for HVAC technicians, utility professionals, laboratory researchers, and homeowners requiring stable halidebased leak identification in critical environments. Use scenarios HVAC service calls: quickly locate leaks in systems using R134a, R404a, or similar halide refrigerants. Laboratory or industrial maintenance: monitor and verify refrigerant containment during tests and experiments. Home or small business maintenance: perform routine leak checks on household refrigeration or air conditioning systems.