Table Mount LED Driver

Table Mount LED Driver with mounting holes and connectors.

These are designed to mount under your railroad (or in a building, or under/behind a doll house)

Input is 0 to 30 volts, AC, DC or DCC, but starts to give constant light at around 4-5 volts
Will  keep a white LED alive for about 1 second on loss of DCC power

Should I get a 1.7ma or 2.3ms board?
How many LEDs can I power?