Check the listing for details. Audio Enhancement WPA-504. Condition: New – Open box. Listed at 20.00 USD. The Audio Enhancement WPA-504 expands communication between classrooms and the office through a call button and an ambient microphone. This wall plate is easy to connect and install, saving time and money. ****Missing Cover Plate Return Policy:Must be returned within 30 days in same condition as sold. Buyer is responsible for return shipping. If item was "Free shipping" actual cost of shipping will be deducted from refund.If there is an issue with a product, please contact me immediately for a resolution. International bids only accepted if eBay's Global Shipping Program is used. Buyer is responsible for any taxes, fees, tariffs or duties associated with this purchase. Contact eBay for further details.Shipping rates are for the continental US only. Alaska and Hawaii please check for shipping rates.Thanks for looking