How do I pair the USB receiver to the handset?

The Handset is paired with the USB receiver at the factory prior to shipping. Should re-pairing become necessary, plug the Presenter UHF Receiver Dongle into an available USB port on your computer, press and hold the CONNECT button on the handset for 3 seconds. The Status light will alternatively flash Green & Red until paired: or will go off after 1 minute if pairing has failed.