The universal 8611 controller is especially designed for compact control system applications. It is compatible with a wide range of proportional control valves and connects with an electropneumatic servo-system for pneumatically actuated process control valves.Microprocessor control. Control of proportional and process valves. For gases and liquids. Direct mount to S030 paddle flow adaptors. External or internal set point programming. Variable PWM control frequency. 8-digit LCDElectrical Connection = Multi-PinControl Output = Analogue, PTM, PWMMounting Style = CompactSupply Voltage = 24 V dcDisplay Screen = 8 Digit LCDPipe Diameter Range = DN 6 - 65 mmMinimum Operating Temperature = 0°CMaximum Operating Temperature = +70°C