The coiled Smart plug is the standard power cable with the volume control / mute button mounted on the top of the plug. It has the red alert light and a green power light on the lighter plug.
If you have damaged or lost your old coiled smart plug, this is the power cord you need to replace the original one that came with your radar detector.
(RJ-12 "telephone-style" plug connection)
Fits Bel radar detector models: STi, RX65, RX55, 995, 965, 955
and Escort radar detector models:
Passport: 9500i, 8500 X50, 8500, 7500S, 7500, 6800