AZ77232 Wall-Mounted CO2 Humidity Meter Carbon Dioxide Tester Indoor Air Quality Monitor with Relay

Brand: 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 minutes STEL value (short-term exposure limit);

model number: AZ77232

Bruce