9" IAQ MONITOR WITH LED ALERT - (GSM250)

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. It has touch panel programming and a user-adjustable CO2 level alarm with disable. NDIR (non-dispersive infrared) waveguide technology use automatic baseline calibration (with disable) for long term drift compensation or 400ppm manual calibration. The meter does not use batteries and requires power from a USB source: PC, Power bank, 5VDC wall adapter (not included).

Specifications:

	GSM250
Carbon Dioxide (CO2)	0 to 9999ppm
Accuracy	±50ppm + 5% (0 to 2000ppm)
Air Temperature	14 to 140°F (-10 to 60°C)
Accuracy	±0.9°F/0.6°C
Relative Humidity	0 to 99.9%RH
Accuracy	±5%RH (10 to 90%RH)
CO2 Alarm (default 1000ppm)	800 to 3000ppm in 100ppm steps
3 Color Light Bar (alarm set at 1000ppm)	Green <800ppm Yellow 800 to 1000ppm Red >1000ppm
Automatic Baseline Calibration	Every 7.5 days with disable
Manual Calibration	400ppm
Power	USB source
Dimensions	8.9 x 6 x 1.8'' (226 x 152 x 45mm)
Weight	17.6oz (500g)