This Telephone 4 Prong to Modular Adapter RJ-11 is the perfect accessory for vintage or rotary phones. Whether you're looking to connect your phone to a new jack or simply need to replace an old adapter, this adapter is easy to use and reliable. With a 1:1 connection split/duplication, you can be sure of a secure and stable connection. The adapter is specifically designed for use with RJ-11 connectors and has been tested to ensure compatibility with a wide range of devices.

The adapter is made by Radio Shack, a brand known for quality and reliability in the electronics industry. This product is part of the Consumer Electronics category and falls under the Home Telephones & Accessories subcategory. It is listed under Cords, Cables & Adapters for ease of browsing. You can trust this adapter to provide you with the connectivity you need without worrying about the condition of the item.