NXG Technology NX-RM820 - Manual (Page 14)

Batteries
If the batteries are running low, the screen will display a warning
at the bottom of the screen whenever you press the Power ON
button. You may also experience a slight drop in the operating
distance of either the NX-RM820 remote control when the batteries
are running low.
Please replace all of the batteries with fresh, new AAA batteries.
Do not mix old and new batteries.
The NX-RM820 will retain all programming even if the batteries are
removed for an extended period.
Cleaning The Screen
Do not use abrasives or liquid cleaning solutions!
Use a dry soft lint-free cloth to clean the screen. Be careful not to
use excessive force. The screen is glass and is easily breakable.
NX-RM820
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NX-RM820_Remote_Manual 10/6/08 2:09 PM Page 14