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The Triplett GSM250 Desktop Indoor Air Quality CO2 Meter can be used to monitor air quality in office buildings, schools, exhibition halls, shopping malls, meeting rooms, fitness centers, restaurants and other public places. It simultaneously displays CO2, Temperature and Relative Humidity. It can be used on the desktop or wall mounted and has a display with a light bar for easy reading from long distances. A 3-color light bar (green / yellow / red) changes color with CO2 concentration.

Triplett GSM400 Portable Indoor Air Quality CO2 Meter

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SA1300p Multi Functional Air Quality Analyzer for CO2, Temperature Humidity - China CO2 Analyzer, CO2 Meter

3-1 Carbon Monoxide Detector Portable Mini Air Quality Monitor with Lanyard Smoke Alarm CO Gas Meter Temperature Humidity Sensor Built-in 1000mAh Battery, Indoor/Outdoor (Black) - Yahoo Shopping

CO2 Monitor with Relay - QA Supplies

LCD screen with large digital display, clear and easy to read. Intelligent backlight, soft and eye protection.

Cacagoo Air Quality Monitor Portable Carbon Dioxide Detector 3-in-1 CO2 Temperature Humidity Meter Tvoc Detection with LCD Display for Home Office Car, Size

HONEYWELL Dispositivo medidor de calidad del aire, HTRAM-V1-W, detector CO2, CONSULTAR PLAZOS

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MOT500-CO2-IROnline Carbon Dioxide Gas Detector

CO2 Carbon Dioxide Detector, 4-in-1 Indoor Air Quality Monitor