TENMARS TM-740

DISPLAY: Dual LCD display: The maximum reading on the primary display is 9999. The maximum reading on secondary display 999. FUNCTIONS: 30mm 6 plastics blade. Light air response 0.4 m/ s. Max/ Min/ Avg and datahold. Auto power off with disable function. Low battery indication. DIMENSION Size : 107mm x48mm x23mm ( LxWxH) Weight ( excluding battery) : 80g Power: 2 batteries 1.5V AAA ( includes) AIR VELOCITY MEASUREMENT: Unit Range Resolution Accuracy m/ s 0.4 - 25 0.1 2% + 0.2 Km/ hr( kph) 1.5 - 90 0.1 2% + 0.8 mph 0.9 - 55 0.1 2% + 0.4 Knots( kts) 0.8 - 48 0.1 2% + 0.4 ft/ mim( fpm) 79 - 4921 1 2% + 40 TEMPERATURE: Unit Range Resolution Accuracy Celsius -20 - 50 0.1 + / 1 1C Farenheit -4 - 122 0.1 + / - 1.8F