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TSI 7515 IAQ-calc meter with built-in probe (CO2 measurements only), x4 AA batteries, hard carry case, manuals and calibration certificate
A range of three instruments used to measure indoor air quality (IAQ) quickly and accurately using a single probe.
+ Model 7515 measures carbon dioxide (CO2) only+ Models 7525 and 7545 simultaneously measure and data log CO2, temperature, and humidity+ Model 7545 also measures carbon monoxide (CO)+ LogDat2 downloading software included (except Model 7515)
Features and benefits - All models
Carbon dioxide (CO2):
Sensor type Dual-wavelength NDIR (non-dispersive infrared)
Range 0 to 5,000 ppm
Accuracy 1 ± 3.0 % of reading or ± 50 ppm, whichever is greater
Resolution 1 ppm
Response time 20 seconds