CO2 Monitor 7787

DIGITAL DESKTOP TYPE GIVES YOU A GREEN DAY! 15 DEGREE TILT ANGLE FOR EASY TO SEE AND READ REAL TIME CLOCK AND CALENDAR ARE DISPLAYED WARNING CARBON DIOXIDE LEVEL FROM 1000-5000PPM SUPER LARGE LCD DISPLAY CO2 VALUE, TEMP. , HUMIDITY, DATE AND TIME MAX. / MIN. RECALL FUNCTION TEMPERATURE UNIT IS SWITCHABLE NDIR ( NON-DISPERSIVE INFRARED) WAVEGUIDE TECH. W/ ABC ( AUTOMATIC BACKGROUND CALIBRATION) LONG TIME DRIFT COMPENSATION BRIGHT LED VISIBLE INDICATES POWER IS ON AUDIBLE ALARM WARNS CO2 AIR QUALITY IS POOR MONITORING RESIDENTIAL , COMMERCIAL AND HOME AIR QUALITY CO2 ALARM OUTPUT DESIGN DRIVES RELAY TO CONTROL VENTILATION SYSTEM, SUCH AS FAN OR AIR CONDITIONER