Photo 1 of Protmex 4 in 1 Portable Carbon Monoxide Detector, Professional Rechargeable CO CO2 Detector Meter Air Quality Monitor with Magnetic Suction, RV Carbon Dioxide Detector Alarm Temp/Humidity Sensor

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Photo 1 of Protmex 4 in 1 Portable Carbon Monoxide Detector, Professional Rechargeable CO CO2 Detector Meter Air Quality Monitor with Magnetic Suction, RV Carbon Dioxide Detector Alarm Temp/Humidity SensorPhoto 2 of Protmex 4 in 1 Portable Carbon Monoxide Detector, Professional Rechargeable CO CO2 Detector Meter Air Quality Monitor with Magnetic Suction, RV Carbon Dioxide Detector Alarm Temp/Humidity Sensor