Keis Constant Power Controller

The Keis Constant Power Controller is and excellent piece of kit that, in my opinion, is an essential part of a Keis heated jacket. The controller enables easy adjustment of the jackets temperature, from high to medium to low. The controller simply plugs into the two connections within the jacket pocket enabling you to switch on the jacket and scroll through the temperature settings, with each displayed by a different colour, so you can see at a glance which setting you have selected. The controller is waterproof so can be left hanging from the jacket when riding. When off the bike it can be tucked away in the jackets dedicated zipper pocket. The Keis jackets come with a small cable by-pass loop which is replaced by the controller. Without the controller the jacket would, when connected to the bikes power supply ramp up to the high setting, which, in my opinion, will prove far to hot for anything but the most extreme conditions. Big thank you to the Sportsbikeshop, Reading, for all the help they gave me.

So easy to use. Not cumbersome like other brands. Wires on sleeves of jacket perfect length to easily attach gloves.

Said to be "free"

Good controller for my J601 jacket.
You have to hold the on button slightly longer than you might think initially to switch it on , but works perfectly once you understand that

Great piece of kit which is large enough for you to operate with your gloves on. Flipping between modes is effortless.

It’s easy to use and essential for preserving your battery otherwise it’s on full power constantly. Just wish it was more accessible. It’s down below the chin line and hard to view with a full face crash helmet on…

Heater controller is neat and easy to use. You do need it and it is a separate purchase to the gilet or jacket and the battery. Once all items purchased it is expensive. The gilet at say around 140 seems reasonable but you add the battery and then the controller and you are in the region of 250. Should all come together as a pack.

Robust and easier to use than the cheaper copies you can buy, the service from Sportsbikeshop was as always, excellent.

Essential for the j505 extreme jacket which it came free with just to make the heat comfortable on the go

Simple to use...however this could have come along with the trousers like it does the Jacket ...but good as always from SBS

Whilst you can use the Keis jacket without this control unit it makes the whole concept work perfectly. It is easy to install and use and makes temperature control perfect.

So glad this came with the jacket AND for free!
I'm able to change the temp on the jacket so easily to suit mid-ride

A must have addition if you buy the Keis heated trousers as the jacket controller does not control both items.

Easy to use & gives three heat settings

A must have controller if you buy the Keis trousers to go with your jacket.

Once plugged in it sits nicely on your thigh, easily controlled even with gloves on.