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Logical Sensor and Actuators

 * Contactor
 * Relay
 * Magnetic starter
 * Switch
 * Limit switch
 * Pressure switch
 * Float switch
 * Sensor
 * Proximity sensor
 * Parking sensors
 * Thermal Limit Cutoff
 * Thermostat
 * Bang–bang control
 * Feedback
 * Controller (control theory)