- Product Name: Halogen Gas Detector
- Model: NF-604
- Brand: NOYAFA
- Display: Color LCD Screen
- Detectable Gas: Halogen Refrigerants
- Detection Range: 0ΓÇô1000 PPM
- Resolution: 1 PPM
- Sensor Type: High-Sensitivity Semiconductor Sensor
- Probe Length: Approx. 250 mm Flexible Gooseneck
- Warm-up Time: 30 Seconds
- Response Time: Less than 30 Seconds
- Gas Detection Accuracy: ┬▒5% FS
- Temperature Measurement: -10┬░C to 50┬░C
- Temperature Accuracy: ┬▒1┬░C
- Alarm Type: Audible Buzzer, Vibration & Visual Display
- Alarm Setting: Adjustable High & Low Alarm Limits
- Language: English / Chinese
- Auto Power-Off: 15 min / 30 min / 60 min / Off
- Power Supply: 4 × AAA Batteries
- Operating Time: More than 6 Hours
- Operating Temperature: -10┬░C to 50┬░C
- Operating Humidity: 10ΓÇô99% RH (Non-condensing)
- Dimensions: 173 × 63 × 31 mm
- Accessories Included: Protective Carrying Case, User Manual
  

- High-sensitivity semiconductor leak detection sensor
- Detects refrigerant leaks from HVAC and refrigeration systems
- Flexible 250 mm probe reaches difficult locations
- Color LCD with real-time gas concentration display
- Triple alarm system: sound, vibration, and visual warning
- Adjustable high and low alarm thresholds
- Built-in ambient temperature measurement
- Fast 30-second warm-up and response time
- Compact handheld design with protective carrying case
- Ideal for air conditioners, refrigerators, automotive A/C systems, cold rooms, gas pipelines, and industrial maintenance