Marsh Bellofram 961-070-000 Type 1000 I/P Transducer, 4-20 mA Input, 3-15 PSI Range. Features include Built-In Volume Booster, Small Size, Field Reversible, Low Air Consumption, Mounts at Any Angle, Light Weight, Wide Supply Pressure Range, and Low Supply Pressure Sensitivity. Applications include valve actuators, damper and louver acutators, valve positioners, controllers, relays, air cylinders, clutches and brakes.