Victron BlueSolar PWM-Light Charge Controller 48V-20A
 
Load output with low battery voltage disconnect function.
Lighting control function, one timer only. 
Two digit seven segment display for quick and easy setting of the load output functionality, including timer setting. 
Three stage battery charging (bulk, absorption, float), not programmable.
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 manual for details