The best replacement for actuator is solenoid.

The best alternatives to actuator are rated as following:
★★★★★  solenoid
★★  motor
★★  servo
★  boost controller
★  effector
★  solenoid valve
★  electric actuator
★  blend door
★  sensor
  wastegate
  piston actuator
  positioner
  valve
  stepper motor

Your alternative for actuator is not listed? Suggest!
Speaking about actuator, one probably shouldn't forget about limit switch.

Other search terms related to actuator and their ratings are:
★★★★★ limit switch
★★★ valve
★★★ ball valve
★ butterfly valve
You have in mind a companion for actuator and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of actuator in all years. Click on graph for more.
actuator
solenoid
motor