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GPA Adaptor - Allows GP300 Accessories to be used with GP340 Series
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Product Details   
Model GPA Audio Adaptor

These handy little adaptors screw into the side of the GP340/GP380/GP640 series radios to allow the GP300 audio accessories to work with the GP340.

Pack of 10 x GPA Adaptor - Allows GP300 Accessories to be used with GP340 Series
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Product Details   
Model GPA Audio Adaptor

This comprises a pack of 10 x GPA Audio Adaptors. These handy little adaptors screw into the side of the GP340/GP380/GP640 series radios to allow the GP300 audio accessories to work with the GP340.