The V220 Sensor has an LED Display with keyboard and an ALU enclosure. It is a high precision differential low air pressure, volume transmitter, alarm monitor and PID controller and comes with a calibration certificate traceable to UKAS.Power Supply is 24Vac/dc or 24Vac or 110Vac or 230Vac isolated. The standard outputs are: 0-10V - 4-20mA - 2 modbus rtu and 1 relais