LDR Light sensor

This light sensor or LDR photoresistor (light-dependent resistor) allows to enable the MF3 automatic light function (day/night) in DC-Car decoders.

Bit 2 of CV 27 must be deactivated.
The CVs 42 + 43 establish the lower range of light, and the CVs 44 + 45 establish the upper range. The values are factory programmed.