Freon leak detector triggers on R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends. Once the switch rotated, the detector will be ready to use. Notice:Wait for 6 seconds away from the potential leakage area once the leak detector is switched on for more accurate detection or it may not give right alarm when you try to detect.
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