ED MARISCAL

Hi there. I bought a touring bike with an installed BUMM CYO T PREMIUM headlight. My question is about the four little LED in the lamp. In any given time only two of the four LEDīs lights (the two in the extremes) no matter where the switch position is set. I want to know if this is a malfunction of the lamp or if this LED are for a purpose other than I donīt know. Owner manual didnīt help in this issue at all. Other than this, the lamp works great. Thanks in advance.

unterhausen

I am not sure about the little leds, it's possible they are burned out. But it also could be a senso model?

ED MARISCAL

Thanks for your answer. It is a SENSO model. I got the lamp with the bike. No info or data other than the one collected via internet. Found the user manual from BUMM but it didnīt help. There are four LED in line. The two located at the center does not lite. Day or night. in any switch position. I read SENSO is a "traffic light" for day riding, but it apparently it does not work. ŋDo you know how this LED should work? ŋWhich switch position? Thanks again.

unterhausen

Is it under warranty?

I have one of these lights, but I never cared about the small leds. I leave the light on all the time

fietsbob

Senso is about light and motion sensing .. so the stand light uses the little LEDs,
rolling, in the dark the bright one kicks in..

'Premium' means newest brighter, overdriven Diode version ....

Sci-Fi

The 2 inner led lights will come on but at higher speeds when the switch is on the daylight mode.