Anti-corrosion plastic shell, PTFE diaphragm, IP55 defense grade, Pump head materials can be selected are: PP, PVC, PTFE; Double ball check valve, manually frequency regulation: 0-100%, panel shows the current operating frequency(operate in manual mode)

Frequency regulation by External pulse: Impulse frequency is adjusted for control modeof 1/N(metering pumps output N times when comes 1 control pulse)and N/1(metering pumps output 1 time when comes N control pulse)

Manually stroke adjusetment: 0-100%.

Start-stop for Remote switch and liquid-level controlled metering pump.
Power: 220VAC 50/60Hz single-phase power.