- Heated diode sensor provides excellent sensitivity
- Detects R22, R134a, R404a, R410a, R448a, R507 (AZ-50), R32, HFO1234yf, and all other CFCs, HCFCs, HFCs, and HFOs
- Automatic background adjustment (“zeroing”)
- Intuitive, easy one button operation
- Power indicator shows when battery is low
- Runs on NiMH batteries or AC adapter
- Headphone jack
- Made in USA
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