You can restore the transmitter back to its factory default settings using the Indigo80 handheld indicator. Connect the transmitter to the indicator. Open the indicator main menu by pressing . Select Devices. If you have more than one device connected to the indicator, make a further selection between the devices. In this case, select Indigo300. Select Settings. Select Factory default settings > Restore settings > OK. Confirm by selecting OK. Exit the menu by pressing or return to the main menu by pressing . More information Connecting Indigo300 to Indigo80 handheld indicator