The Swytch conversion kit is an easy to fit system even for those of limited mechanical ability. It is compact and fits without interference to other cycle options (unless you have a front basket or similar which would have to be removed). The pedal sensor is a good fit and does not appear to interfere with the pedalling action or get caught by your foot or trousers. I have the mid range controller which only allows you to go up through the power modes of which there is 0 (off) to 5 settings and not back down - go up to 5 and the next selection is 0. In hindsight I should have had a controller that goes up and down the power settings. But it is easy once you are used to it so not a insurmountable problem. In my kit, a couple of unused wires from the battery support could have been tidier and capped. Compared to buying a full electronic bike it is much cheaper option. I am very happy with the purchase and usefulness.