04 Ago US-09 Dual Gas Detector (CO & H₂) – Real-Time OLED, AL1/AL2 Alarm Levels
Two independent alarm thresholds (AL1 & AL2) for each gas. CO detection range: 0–300 ppm (AL1 @ 35 ppm, AL2 @ 200 ppm). H₂ detection range: 0–50% LEL (AL1 @ 5% LEL, AL2 @ 10% LEL). Alarm Levels (CO) AL1: 35 ppm, AL2: 200 ppm....