Victron Energy BlueSolar PWM Pro Charge Controller 12/24V 20A – SCC010020110

The BlueSolar PWM-Pro series is ready for use with its default settings.
 
It also is fully programmable:

With help of a computer and software
With the dedicated BlueSolar Pro Remote Panel (see features below).

 
Features

Lighting control function, fully programmable.
Three stage battery charging (bulk, absorption, float), fully programmable.
Integrated battery monitor function (Remote Panel needed to display state of charge).
Load output with low voltage disconnect and manual control (default setting).
Optional external temperature sensor. – Load output protected against over load and short circuit.
Protected against reverse polarity connection of the solar array and/or battery.

 
Day/night timing options
See Remote Panel manual for details