The e-brake lever is a device designed to cut power from the motor controller as soon as someone squeezes on the brakes. It's a sensible safety idea, but we stopped carrying them several years ago because the quality of the actual brake levers was so poor that in several cases the lever arm itself failed, leaving the rider without an operable hand brake. Well we now have a decent quality all-aluminum e-brake lever for the eZee kits. It plugs into the 4-pin PAS connector and effectively disables the throttle power when you are squeezing the brakes. It could be easily adapted to other controller systems as well. The switch mechanism is a magnetic reed device mounted outside the housing, normally open, which closes contact and the levers are pulled.