Hi guys, I have managed to mount a speedo/distance counter and a powerful led torch to my wheelchair, and Im thinking to buy a rear bicycle light too... I have just come across these smart lights that turn on automatically and acts as a brake light. But would these be any good for a wheelchair that go a max speed of 4mph, but I would want it to come on as slow as 2mph?. Or would I be best getting one with a remote?