Why you need this detector Quickly locate refrigerant leaks in systems that use halogen-containing refrigerants (Freon and similar compounds). Detecting and repairing leaks improves system efficiency, reduces downtime, and prevents refrigerant loss. Key benefits Broad compatibility: Detects all refrigerants that contain halogens, so it works with air conditioners, refrigeration units and other equipment that use Freon-like refrigerants. Sensitive and adjustable: Seven sensitivity levels let you target large or very small leaks. Maximum sensitivity is 0.21 oz/year, suitable for self-testing home and vehicle air conditioning systems and routine HVAC service. Fast, reliable results: 6-second preheat and a 3-second response time let you begin testing quickly and confirm leaks with minimal wait. Easy to use on the job: A 7.9-inch flexible probe reaches tight corners and confined spaces for more accurate localization of leaks. Clear alarms: Both audible and visual alerts make it easy to identify and confirm leaks even in noisy or dim environments. Key features and performance Detection type: Halogen refrigerant detector — finds leaks of refrigerants containing halogen compounds. Sensitivity: 7 adjustable levels; maximum 0.21 oz/year. Real-time sensitivity automatically adjusts to changing concentrations, adapting from low to high levels for consistent detection. Response timing: Preheating time 6 seconds; response time 3 seconds for rapid detection. Probe: 7.9-inch flexible probe to access tight or awkward spots. Alerts: Acoustic alarm and LED indicator. Device emits two beeps per second in idle/open mode; beep rate increases up to ten beeps per second as leak level increases. LED light flashes more rapidly with higher leak concentration. LED is normally green when battery voltage is normal and suitable for continuous detection. How it solves common problems Locates leaks that are hard to see or smell, so you can target repairs instead of replacing components prematurely. Adjustable sensitivity helps avoid false positives in chemically noisy areas while still finding very small leaks when needed. Flexible probe and quick response let technicians inspect hard-to-reach evaporators, pipe runs, and fittings without disassembly. Typical applications Home and commercial air conditioning: Inspect split systems, window units, and packaged air conditioners for refrigerant loss. Refrigeration equipment: Find leaks in display cases, walk-in coolers, vending machines, and supermarket refrigeration lines. HVAC service and maintenance: Routine diagnostics and leak tracing on residential and commercial systems, plus quick checks during system commissioning and repair. What to expect in use Power on, allow 6 seconds preheat, then sweep the probe around fittings, joints and valve stems. The detector responds within about 3 seconds when it senses refrigerant. Audible beeps and faster LED flashing indicate increasing leak levels; adjust sensitivity to focus on smaller or larger leaks as needed. Materials and design notes Flexible 7.9-inch probe for access to tight spaces. Real-time sensitivity control and audible/visual alarm design support practical field use. This detector provides targeted, reliable halogen refrigerant leak detection with fast startup, adjustable sensitivity, and clear visual and audio alerts — useful for technicians and users who need accurate, efficient leak location in air conditioning and refrigeration systems.