Abstract: Apparatus for remotely displaying the inflation pressure within an inflator for inflating a balloon catheter. The apparatus comprises a pressure transducer positioned to sense pressure within the syringe, a transmission unit receiving a pressure signal from the transducer and transmitting by means of infrared light pulse sequences, a pressure message reflective of the pressure signal. A monitor positionable at a distance from the transmission unit receives and decodes the pressure messages, and provides a display thereof. A timer key for initiating the transmission of start/stop clock messages is located on the inflator unit. The monitor further includes a timer responsive to received clock messages, and an elapsed time display.