Features: Detect all halogen gas leaks, including but not limited to refrigerants, such as-CFCs(R11, R500, R503) HCFCs(R22, R124, R502) HFCs(R123a, R404a), AZ-50, HP52 , MP39, ethylene-oxide, SF-6, carbon tetrachloride, halongen gas. The 7-level sensitivity is adjusted by the knob. Built-in high-precision voltage-regulator IC-and ultra-low power consumption circuit design make the work more stable and the battery more durable. Two color indications of battery-voltage. Accurate detection, rapid warm-up within 6 seconds. Specifications: Material:Plastic Size:Approx.15x3.5x3.3cm/5.9x1.37x1.29inch Type: halogen leak detector Working temperature: 0℃- 52℃ Battery life: about 50-hours (normal use) Response time: instantaneous Probe-length: 20cm/7.87 inches. Warm-up: about 6 seconds Reset-time: 2 ~ 10 seconds Power supply: DC6V, 4xAAA (excluding) Measurement object: halogen gas and halogen refrigerant. Package Includes: 1x Gas Leak Detector note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.