The RBE Power Guard unit is similar to the RBE Power Sentry Unit with the
following exceptions:
1) The Power Guard unit adds an under voltage detection circuit which protects voltage
sensitive equipment (electric motors, controls, etc.) from brown-out conditions.
2) The unit doesn't allow resetting the equipment plugged into its outlet until the
equipment's power switch is turned off.
3) The Power Guard unit doesn't have a keyed lock-out switch or warning buzzer.