CO2, Temperature and Humidity meter with software

CO2 Meter features:
* Design with NDIR (Non-Dispersive Infrared) wave guide technology sensor
* Triple displays of CO2 level, temperature and humidity
* Data output to PC every 2 seconds for on-line analysis
* Display 8 hrs TWA value (time-weighted average) & 15 minutes STEL value (short-term exposure limit)
* Housing design surrounds with rails to help air ventilation for quick and accurate response
* Easy manual calibration on CO2 and humidity (with AZ salt bottle)
* Dual display 2 parameters simultaneously: CO2, temperature
* Audible carbon dioxide level warning alarm
* Big LCD display with high resolution
* Back light for working in dark area
* Battery and adaptor power supply ( not included )
* PC connect via USB interface

CO2 Range	0~9999 ppm (5001~9999 ppm out of scale range)
CO2 Resolution	1 ppm
CO2 Accuracy	±30 ppm ±5% of reading (0~5000 ppm), other range are not specified
CO2 Response Time	＜30 Seconds (90% step change)
CO2 Warm-up Time	30 Seconds
Air Temperature Range	-10~60℃, 14~140℉
Air Temperature Resolution	0.1℃, 0.1℉
Air Temperature Accuracy	±0.6℃, ±0.9℉
Air Temperature Response Time	＜2 mins (90% step change)
Humidity Range	0.1~99.9% RH
Humidity Resolution	0.1% RH
Humidity Accuracy	±3%RH (at 25℃, 10~90%RH); others ±5%RH
Humidity Response Time	＜10 mins (90% step change)
LCD Size	44(L) * 26(W) mm
Meter Size	205(L) * 70(W) * 56(H) mm
Operating Temperature	0~50℃
Operating RH%	0~95% RH (avoid condensation)
Storage Temperature	-20~50℃
Storage RH%	0~90% RH (avoid condensation)
Power Supply	AA * 4 PCS
Battery life	＞ 24 hours (Alkaline Battery)
Weight	~200g