Dimensions	157 x 120 x 45 mm
Weight	Approx. 200 g
Range of application	0…50 °C / 0…100 %RH, non-condensing
Accuracy at 23 ±5 °C	±30 ppm ±5 % of the measured value, <2.5 %RH (10...90 %RH), ±0.3 °K
Measuring range	0...5'000ppm; 0...100%RH; -20...60°C
Measurement principle	Non dispersive infrared (NDIR) with automatic baseline correction (ABC)
Adjustment points	Automatic calibration, manual calibration at 400 ppm and 35, 80 %RH
Pressure dependency	+1.6 % reading per kPa
Null drift	<10 ppm/year
Power supply / Power consumption	Via AC1214 AC adapter (included in the delivery package)
Current consumption	50 mA
Measured value memory	40,000 values with time stamp, automatic recording (%RH / °C / CO2 / external temperature probe)
Warm-up time	<1 min.
Long-term stability sensor	< 1.5 %RH per year
Humidity sensor	ROTRONIC HYGROMER® IN-1
Temperature sensor	Thermistor
Response time	<10 sec @ 30 cc/min. flow, <3 min diffusion time
Response time t 63	<30 s, without filter
Parameters shown	CO2, relative humidity and temperature
Alarm indicators	Adjustable for CO2 measurement
Real time clock w.backup battery	Yes
Exploitation software	ROTRONIC SW21 free of charge, HW4 subject to charge
Housing	ABS
IP protection rating	IP30
Maintenance	No maintenance (standard indoor application)