Before calling your dealer or service center for assistance , check the following: 1. Make sure you have connected a projector to your computer or video equipment as described in the section "CONNECTING THE PROJECTOR"
Installing Remote Control Batteries If buttons on the remote control are inoperative when you attempt to operate the projector, replace the batteries with new ones. It is recommended to check the batteries before a presentation.
Bluetooth speaker function You can use it as a Bluetooth speaker and since it has a microphone function, it can be used as a mic/speaker for audio conferences. Sub battery functions