Max-Air AE Series modulating electric actuator is perfect for rotary control valve applications – particularly applications using butterfly valves, ball valves, and v-port ball valves. Flexible input and output options (selectable 4-20mA, 0-10V), standard auxiliary switches, space heater & convenient LED open/close indication make setup and operation simple and effective. ISO 5211 standard mounting pattern allows for low profile assembly to many direct mount style valves.