Abstract: A vacuum pressure gauge assembly includes a body, a pressure transducer received within the body, a microcontroller received within the body and configured to receive a signal indicative of a pressure from the pressure transducer, and at least one light emitting device in communication with the microcontroller. The microcontroller is configured to process the signal from the pressure transducer to determine the pressure, and to control the at least one light emitting device to display a first light pattern when the pressure is within a first pressure range and a second light pattern different from the first light pattern when the pressure is within a second pressure range different from the first pressure range. At least one of the first light pattern and the second light pattern varies in intensity over time.