1) Four digits LED indicator displays working speed. 2) Four-fifigure digital LED indicator displays working speed. 3) LF-LED-OS software systemc 4) LEDindicator displays the reversible direction, internal control, external control, foot switch and other working mode. 5) Easy dispensing function, it realizes the repeat timing quantitative dispensing liquid. 6) Large torque, can drive multi-channels and various types of pump heads. 7) Super anti-interference feature, wide input voltage range, acceptable for complex power environment. 1) Flow range: 0.0001-720 mL/min 2) Speed range: 0.1-150 rpm 3) Speed resolution: 0.1-100 rpm, 0.1 rpm resolution; 100-150 rpm, 1 rpm resolution 4) Speed accuracy: 0.2% 5) Power supply: AC 100-240V,50Hz/60Hz 6) Power consumption: < 40W 7) External logic level control signal: 5V, 12V (standard), 24V (optional). 8) External analog control signal: 0-5V (standard); 0-10V, 4-20mA (optional) 9) Communication interface: RS485 MODBUS 10) Operating condition: Temperature 0~40°C; Relative humidity <80% 11) IP grade: IP31 12) Dimensions (L x W x H): 264 x 150 x 270 mm (10.39 x 5.91 x 10.63 inch) 13) Weight: 4.9 kg (10.4 lbs)