Flow range: 0.03 to ±16ft/s (0.01 to ±5m/s)Accuracy: ±1.0% of reading(0.5 to ±5m/s)Repeatability: 0.3%Outputs:4~20mA,Website:http://www.pflowmeter.com, maximum 750ΩOCT pulse, 0~10 KHzRelay output, 125VAC@0.3A or 30VDC@1A Communications: R485 (standard) RS232 (optional) Power consumption: 2WWeight: 2.4lbs (1.1kg)