On 04/02/2021 08:51, Jon Parker wrote:
Morning all,

I've a new extension which has 2 banks of downlighters (one bank of 6 and one of 8) in the ceiling. Each bank is controlled by a Varilight V-Pro mullti-point touch and IR dimmer master and slave.

When I turn the lights off, they are staying on but going to a really low, barely perceptible level.

How faint? You can easily see the die illuminated in modern high
efficiency LEDs with just a couple of uA flowing in them.

Dark adapted you can see by 10uA leakage current on an LED torch. Makes
it much easier to find one in a power cut after dark.

Because it is happening on both banks, I'm inclined to suspect the dimmers.

Could also be capacitive coupling of long wiring runs especially if it
is a two switch system with them widely separated.

--
Regards,
Martin Brown