A continuous strip housed in the channel groove: the stair is marked out without a ceiling light.
An illuminated handrail is not there to decorate; it is there so you can see where you put your foot. The LED strip runs in the profile: the stair nosing is lit without ceiling light falling into the eyes of whoever is climbing. The kit comes for wall or glass mounting.
The values that matter are electrical. The strip runs at 24 V, supplied from 220-240 V AC, 50/60 Hz. It draws 6 W per metre for 337 lumens, with 144 LEDs per metre and an 80° beam angle. The colour temperature is 4000 K — neutral white, neither the yellow of a living room nor the bluish white of a car park.
The protection rating is IP66: the assembly withstands driving rain and jet washing, so it takes outdoor use. The strip can be cut every 55 mm, which sets the real cutting pitch — a 3.42 m line of light does not exist, you land on the lower multiple and make up the difference at the end.
What is decided during installation is the cable. Before ordering you have to settle where the supply comes from, where the transformer sits — dry, ventilated, accessible — and how the drop runs: in the wall, in a post, or in the first support. Resolved after the event, it always shows. In Switzerland, connection to 230 V is reserved to an installer holding a licence: we install the profile, block the glass and pull the cable to the connection point, and the electrician makes the connection and carries out the inspection.