Elitech WJL-6000 Portable Refrigerant Halogen Leak Detector Tester Air Condition HVAC R22 R410A R134A CFCs HCFCs HFCs Detects Traditional corona sensor triggers on R22, R134A, R404a, R410A and all halogenated refrigerants including HFCs, CFCs,HCFCs and blends. Response within 3 seconds; Warm up in 6 seconds. 7 Adjustable Sensitivity; Maximum sensitivity is 0.21oz/yr. Audible and visual gas leakage indicators and dual battery indicator. A flexible probe around 7.9-inch allow detections in difficult and hard-to-reach areas. CFCs e.g.R12, R11, R500, R503 etc. HCFCs e.g. R22,R123, R124,R502 etc. HFCs e.g. R134a, R404s, R125 etc. Blends such as AZ-50. HP62. MP39 etc. Once the switch rotated, the detector will be ready to use. Preheating time: 6s Response time: 3s 1-7 Grade selectable sensitivity Maximum sensitivity is 0.21oz/yr smaller leak, higher sensitivity grade More refrigerants, more rapidly beeps, faster 
 indicator flashes Note: 2 beeps per second when the detector is open, 10 beeps per second when leak is detected) LED light flash alarm Buzzer alarm Dual-battery indicators Around 7.87-inch flexible probe Allows detection in difficult and hard-to-reach areas. Battery life: about 50 hours Compact design Portable black bag to carry and storage <span class="a-text-bold">Note:</span> batteries NOT included