• Portable Ammonia Gas Detector, 0-200 PPM Rechargeable Ammonia Gas Monitor, Digital Air Quality NH3 Gas Meter with Temperature Humidity Tester for Farm, Poultry, Pig & Livestock KWD 58
• Portable Ozone Detector, 0-20 PPM Ozone Gas Monitor with 0.01 PPM High Resolution, 16H Long Battery Life, Ozone Meter with Alarm, O3 Air Quality Monitor with Temp & Humidity Tester KWD 62