Honeywell Electric Actuator ML7421B8012-E The ML7421A / ML7421B actuators are designed for modulating control, accepting 0(2)…10v or 4…20mA input signal, and providing feedback signal 2…10 Vdc only. FEATURES OF ML7421B8012-E Easy and quick installation No separate linkage or adjustments required Low power consumption and maintenance-free Self-adaption function Force-limiting end stops Manual operation knob Download PDF Now