Brand NICETY Model AM841 Quantity 1 Color Red + black Material ABS Features Wind speed temperature airflow measurement Application Environmental monitoring ventilation and exhaust pipes fans air-conditioning manufacturing sports outdoor sports air sea fishing and so on. Other Five kinds of wind speed units conversion; Show Bft (Beaufort scale) and wind chill index convenient and practical; Maximum / minimum / data hold; Battery voltage indication auto power off; Measurement range: 0.4~30m/s; Resolution: 0.1m/s; Accuracy: +/- (3% reading value + 0.2m/s); Temperature measurement range: -10~50'C; Resolution: 0.1'C/'F; Accuracy: +/-1'C; CFM: 0~999900 ft3/min; CMM: 0~999900 m3/min; Display screen: 2.2" 4-digit LCD; Measurement speed: 0.5s; Probe length up to 2m; Probe diameter: 65mm (High strength); Powered by 1 x 6F22 9V battery (included) Packing List 1 x Meter (50cm~200cm retractable cable) 1 x Battery 1 x English user manual 1 x Box