Originally Posted by scoobert
dimmable, 12 volts i think.
These sort of fittings are designed to run constant 12v without a good driver to stabilise the voltage (the brick does that job, but this will be removed for marine
use). Boat voltage is nominally 12v, but varies considerably. Sometimes as much as from 11.8-14.6v.
LEDs are very voltage (actually current) sensitive. The domestic units don't have a good driver and with marine
use they often have a short life, or are much duller than they should be. There is also a very small risk of fire. Recessed fittings are a particular worry because the cooling
is also poor in boat ceiling.
Units advertising a large voltage range (say 10-30v) indicate the presence of a good driver circuit.