Portable Digital Carbon Dioxide Temperature Humidity Indoor 9999ppm NDIR Sensor IAQ CO2 Monitor Wet Bulb Temperature (WB) Dew Point (DP) Tester CO2 Monitor for Indoor Air Quality (IAQ) Diagnosis by TekcoPlus

CO2 Meter Portable CO2 Detector Digital CO2 Monitor with Alarm Function Carbon Dioxide Temperature and Humidity Meter, NDIR CO2 Sensor Indoor Air Quality Monitor for Home Office Grow Room

Klein Tools ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm, 4 x AAA Batteries and Carry Pouch Included

Klein Tools IR1 Infrared Thermometer, Digital Laser Gun is Non-Contact Thermometer with a Temperature Range -4 to 752-Degree Fahrenheit