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1 | Plug power supply into power source. |
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| Any 110 to 120 VAC outlet can be used. The power must stay connected during | |
| the full 13 hour charge cycle. |
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2 | Plug power into case. | green LED lit when |
| The green LED next to the power connector will illuminate | |
| power is connected | |
indicating the case is powered.
3 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.
Enlarged area of interior of
Warning: Do not attempt to charge alkaline batteries. This may damage the unit and case, and will void the warranty!
4Turn units to be charged OFF.
For optimal charging, receivers and transmitters should be turned OFF* during the charge cycle. Portable transmitters manufactured prior to 2003 require that the unit be turned ON to begin charging. Once charging begins, turn the unit OFF.
Receiver power switch - turn clockwise until you hear a ‘click’ 
LT-700
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