QIUSUO Chlorine Gas Detector  Chlorine Single Gas Concentration Detecting Machine Gas Leak Alarm Tester with Measuring Range 0 to 20ppm Resolution 0.1ppm L-Alarm 5ppm H-Alarm 10ppm Explosive Proof Housing

QIUSUO Chlorine Gas Detector CL2 Gas Detectors with Measuring Range 0 to 20ppm Resolution 0.1ppm L-Alarm 5ppm H-Alarm 10ppm Water-Proof and Dust-Proof Accuracy≦ 5% F.S. for Detecting Gas Leakage

QIUSUO CL2 Gas Detector Chlorine Detectors Chlorine Gas Leak Detector with Measuring Range 0 to 20ppm Resolution 0.1ppm L-Alarm 5ppm H-Alarm 10ppm Visual Audible Alarm for CL2 Gas Leakage Detection