Vintage Steering Wheel Transmitter from the ‘80’s, Collectors item. With features such as Steering Rate Adjuster and Adjustable Throttle Limiter as well as servo reversing, adjustable trim by knobs and a stowaway Antenna these were very popular with both the model car and boat enthusiasts. A full 16 page instruction manual is still available online to read or download . Battery holder cartridge is missing and unit has not been tested. Postage available at buyers cost. PayPal welcome.