A4HRT: AUMATIC ACExC 01.2 positioner and position feedback signal 0/4 - 20 mA (poti in actuator), basic version, reversing contactors MODE, CLOSE, OPEN, STOP, EMERGENCY, I/O (24 V DC), 6 programmable output contacts, HART actuator, AUMA power class A1-A3
A5HRTCO: AUMATIC ACExC 01.2 position feedback (potentiometer in actuator), Thyristors MODE, CLOSE, OPEN, STOP, EMERGENCY, IO (24 V DC), 6 programmable output contacts, HART current output, AUMA power class B1/B2