AZ77232 Wall-Mounted CO2 Humidity Meter Carbon Dioxide Tester Indoor Air Quality Monitor with Relay Light Measurement Auto-detection of Contact voltage:Detecting the

Auto-detection of Contact voltage:Detecting the voltage to earth of Earth electrodes or Protective conductors during RCD test - when applying test currents - at measurement using EARTH in order to prevent electrical shocks caused by the damaged earth

UV Transmission Meter

Display:LCD with back-light

Resist max

more compact and flexible design to improve the use of flexibility

AZ77232 Wall-Mounted CO2 Humidity Meter Carbon Dioxide Tester Indoor Air Quality Monitor with Relay Light Measurement Auto-detection of Contact voltage:Detecting theBrand: Graigar Features: Super large LCD display CO2 value and temperature simultaneously; Designed with NDIR (Non Dispersive Infrared) wave guide technology; ABC (Automatic Background Calibration) preset on for long time drift compensation; Easy to manually calibrate CO2 at fresh air; Digital wall mountable desktop type; Warning Carbon Dioxide level; Alarm output drive relay to control system; Display 8 hrs TWA value (time weighted average) or 15