Data storage: 100 sets of measurement data of wind capacity range: 85-3400 m3 / h; (50 ~ 2000cfm) Resolution: 0.1 m3 / h wind speed range: 0.2 ~ 7.6m / s; (0.65-25 f / s) Temperature Range / Resolution: -10 ~ 80 ℃ / 0.1 ℃; Accuracy: ± (0.5% of reading + 0.5 ℃) intake air flow rate accuracy: ± (3% reading +12 m3 / h) exhaust flow rate accuracy: ± (4% of reading + 12 m3 / h) with a RS232C interface and PC software and third-party calibration certificate