The Spirax Sarco SP400 is a highly efficient and reliable smart electro-pneumatic valve positioner engineered for the precise control of pneumatic valves. Manufactured in Italy, this advanced unit operates using a standard 4-20 mA analog input and accommodates a versatile supply pressure range of 1.4 to 7 bar (20 to 100 psi). It delivers an output of 0 to 100% of the supply pressure, guaranteeing accurate, responsive single-acting operation with a linear flow characteristic. Equipped with a clear local LCD display for easy monitoring and a durable mounting bracket for secure installation, the SP400 (Software Revision 7.01) ensures seamless integration, simplified commissioning, and superior operational performance in industrial fluid control systems.