The 16 Second Digital Delay was one of EH's greatest achievements. At the time, it was the ultimate in digital delays and they're still coveted by guitarists the world over. The Controller is a repro of the 16 Second Delay's hard to find and expensive footswitch. Connected to the delay with an ordinary guitar cord, the Controller allows remote operation of 6 functions of the delay:

Infinite
Slow
Clix
Repeat
Reverse
Effect

The Controller will only work with the vintage 16 Second Digital Delay and is not compatible with the 3-footswitch reissue version.
Requires 9v battery for full operation.