LUTRON AQ-9901SD

Air Quality Meter ( T, Td, RH, CO2, CO, O2) LUTRON AQ-9901SDÿ . Features: * Real time recorder, save the data into the SD memory card and can be download to the Excel, extra software in no need. * Air Quality measurement application, multi-function: CO2 ( Carbon dioxide) , CO ( Carbon monoxide) , O2 ( Oxygen in air) , Humidity, Temperature measurement. * CO2 range: 0 to 4, 000 ppm x 1 ppm * O2 range: 0 to 30.0 % x 0.1 % * CO range: 0 to 1.000 ppm x 1 ppm * Humidity range: 10 to 95 % RH * Dew point: -25.3 to 48.9 ° C, ° C/ ° F * Temp. range: 0 to 50.0 ° C, ° C/ ° F * CO2 sensor: NDIR, long term reliability * CO, O2 sensor: Galvanic cell type * Humidity sensor: Precision capacitance sensor * Alarm setting with the beeper sound output * Sampling time for data recorder is 2 seconds to 8 hours * Somplete set with 4 probes: CO2/ Temp. probe, O2/ Temp. probe, CO/ Temp. Probe, Humidity/ Temp. Probe, main meter and the hard carrying case * Meter can cooperate with 2 GB to 16 GB SD card, SD card is optional * RS232/ USB computer interface