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LR-400
LR-400 Setup Instructions
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Remove the product
Remove outer packaging and plastic cover. Inspect for physical damage.
If damage is apparent, please contact Listen Technologies Corporation
technical support for assistance.
WARNING: Do not place the BATTERY switch in the NiMH position if you are not using Nickel Metal Hydride Batteries. The NiMH position
will attempt to charge any batteries in the unit, even if they are not the proper type. Charging non-Nickel Metal Hydride (NiMH) batteries
will result in physical harm, destruction of property and/or fire.
Locked
Unlocked
Select Battery Type
You have two choices: NiMH and Alkaline. The unit is shipped with the switch
in the Alkaline position. Use a pen or small screwdriver to select the battery
type.
CAUTION: If you are using any battery type other than rechargeable Nickel
Metal Hydride (NiMH) batteries, make sure the BATTERY selection switch is in
the alkaline position.
Open the front access door
If locked, use a pocketknife or small screwdriver to unlock the door locks
on both sides of the unit. To unlock the door, rotate the lock 1/4 turn
counterclockwise.
Grip the two tabs with your thumb and index finger and pull the door
downward. Do NOT place batteries in the unit yet.
Set SQ switch
The SQ switch is inside the battery compartment next to the Battery Select switch. The unit is
shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to
the OFF position (to the right). See page 45 for more information on SQ.
Place Batteries in Unit
Place two AA batteries in the compartment, making note of the battery polarity shown in the
battery compartment, and again verifying that the BATTERY SELECT switch is in the correct position
for the batteries you are using. (ALK should be selected for all battery types other than NiMH).
NOTE: Listen provides industrial strength AA alkaline batteries (part number LA-361) and high
performance AA Nickel Metal Hydride batteries (part number LA-362). These may be
purchased from your Listen dealer.
Battery Select Switch
SQ™ Select Switch