TENMARS ST-501 CO2 Temperatur Sensor RH Monitor

Product Description - 3 Independent CO2, humidity and temperature sensors. - User operated CO2 calibration. - USB datalogg: 50, 000 records. - Internal backup battery to maintain date/ time setting. - Power management IC to increase batter efficiency. - Easy- to-Use PC software for parameter settings and data analysis. - Internal CO2 alarm buzzer. - CO2 Sensing Method: NDIR ( Non-Dispersive Infrared) - Measures: Carbon dioxide in PPM, temperature ( F or C) , % Relative Humidity - CO2 Measurement range: 0~ 9999 ppm ( 2001~ 9999 ppm over range) - CO2 Accuracy: ± 75ppm, ± 8% of reading ( 0~ 2000 ppm) - Display Resolution - ± 1 ppm - Datalogging: 50, 000 records, - Fast USB download ( 50, 000 records in less than 10 seconds.) CO2 Sensor Type Non-dispersive infra-red ( NDIR) Measurement Range 0~ 9999 ppm ( 2001~ 9999 ppm over range) Accuracy ± 75ppm, ± 8% of reading ( 0~ 2000 ppm) Resolution ± 1 ppm Response Time 2 seconds Relative Humidity Sensor Temperature Sensor: Type CMOSens Type Thermistor Measurement Range 1% ~ 99% Measurement Range 0 to 50C Accuracy ± 3.0% RH( 20~ 80% ) ± 5.0% RH( 80% ) Accuracy ± 0.5C from 0-50C Resolution 0.1% Resolution 0.1C Response Time 8 Seconds Response Time 1 seconds Power Supply Battery Four AAalkaline batteries x4 Battery Operation 24 hours External Power Supply 6V VDC with 0.5A