A refrigerant leak detector for halogenated refrigerants - MULTI-PURPOSE COMPATIBILITY: Detects all halogenated refrigerants R11, R22, R134A, R404a, R410A, R1234yf, SF6 (HFCs, CFCs, HCFCs and blends). Suitable for almost all air conditioning cooling, including car A/C, household A/C, and device cooling. - FAST, RELIABLE DETECTION: Warm-up time 6 seconds and response time 3 seconds. After first switch-on, run for 6 seconds and switch to the best detection state. To use, place the sensor tip near a known leak area and turn on. You will detect higher leakage concentration. When a gas leak is detected, a di di sound will play. The indicator light flashes faster as leaks increase. - PERFORMANCE AND ALERTS: Audible and visual alerts with rapid indication as leak concentration grows. Designed for service and inspection tasks across automotive, residential, and equipment cooling environments. - USE SCENARIOS: - Inspect car air conditioning systems for leaks during maintenance or after repairs. - Check home or office air conditioning units for refrigerant leaks. - Evaluate cooling devices in electronic equipment or other machinery for leaks.