is a cable that converts any battery-operated toy or appliance into a switch-activated device.  Place the upper disc between the battery contact and a battery in the device and connect a switch. 

The Battery Device Adapter is a  flexible copper disc and thin lead wire. A 1/8-inch switch jack permits connection to a Big Red switch or Jelly Bean switches (see separate entries), or other compatible switches. A How-To Guide is included. DIMENSIONS: 12 inches. WEIGHT: 1 ounce.

Choose AA/AAA or C - D