Home › Testing the MH-Z19 Infrared CO2 Sensor Module › CO2-sensor-MH-Z19-pinout CO2-sensor-MH-Z19-pinout Posted on 6 years ago • Updated 6 years —by Terje 1292 Share on FacebookTweet on TwitterGoogle+LinkedInPinterest Share on FacebookTweet on TwitterGoogle+LinkedInPinterest Post navigation Previous PostTesting the MH-Z19 Infrared CO2 Sensor Module