Orderwire Use the Orderwire tab to turn the buzzer on and to view the gain value. Item Description Buzzer On If checked, turns on the orderwire buzzer. 2-Wire Level Displays the gain value setting for transmit (TX) and receive (RX). Double-click the value to change the slider orientation. Apply Applies changes to the Orderwire tab. Reset Cancels Orderwire tab changes and returns the fields to their last-saved settings. Help Displays context-sensitive help.