Check the listing for details. PYE TWO WAY RADIO VOLUME & SQUELCH CHANNEL CONTROL BOXES Three Models QTY Six. Color: Grey, Condition: Open box, Made in United States. Listed at 19.95 USD. I have for sale a Lot of Six Vinatge New Open Box Transistorized Radio Control Boxes in Three different models. Two of each of the three models for a Lot of Six Control Boxes. There are two with mounting brackets that have wires in the back for color coding and plug ins. Designed for radio communication equipment allows users to easily manage the audio output. Compatible with Vintage PYE Communications Two Way Radio transceivers. These control boxes are untested and being sold as is. The cosmetic condition is new in the open box. There may be some small imperfections from being stored nothing stands out overall in nice fresh clean conditioin. Comes with Six Control Boxes Only. .Made in Cambridge England. Thanks for viewing the listing.