Listen Technologies LA-311 User Manual download pdf (Page 11)

4-Unit Cases

Plug power supply into power source.

Any 110 to 120 VAC outlet can be used. The power must stay connected during

the full 13 hour charge cycle.

Plug power into case.

The green LED next to the power connector will illuminate

indicating the case is powered.

Check Battery Select Switch.

Make sure that you are using NiMH batteries and that the

battery select switch is in the correct position. Charging will only

occur when the Listen product’s battery selection switch is set

to the “NiMH” position. This switch is located inside the battery

compartment of the product.

green LED lit when power

is connected

Warning: Do not attempt to charge alkaline

batteries. This may damage the unit

and case, and will void the warranty!

Enlarged area of

interior of LR-500

LA-317/323 Charging Instructions

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Listen Technologies LA-311 User Manual Page 11