Single phase motors. Allows speed control of single phase fan by voltage variation. Especially suited for constant pressure systems. Includes a power cable and pressure tube. Integrated pressure transducer (12VDC). Supplied with cable glands. Function integrated boost fan, adjustable from 10-60 min. Display with three digits. Entries for remote control “ON/OFF” + “select maximum speed”. Configurable input for analog sensor current / voltage / NTC thermistor sensor / Pt1000.