Elitech Refrigerant Leak Detector, CLD-100 Freon Leak Detector Car HVAC Halogen Refrigerant Leak Detector CFCs HCFCs HFCs. Size

Is it normal for the device to start beeping when turned on? Yes, it beeps upon powering on, and when a leak is detected, the alarm sound becomes more urgent. Why does the product alarm when not in a leaking environment? 1. Probe blockage, clean according to the manual. 2. Probe damaged, replace it. 3. Circuit board damage. Why does the product fail to power on? 1.This product does not include batteries, install them before use. 2.Poor contact in the battery compartment. 3.Knob switch damaged. Upgraded version of WJL-6000. Traditional corona sensor with updated analogue circuit, fast triggers on R11, R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends. Direct status indication with audible & visual leakage alarm indicators and dual colour battery indicators. Battery by 4 AAA batteries (Not included)