BlueSolar PWM-LCD&USB Liquid Crystal Display Two 5 Volt USB outputs Lighting control function, fully programmable Three stage battery charging (bulk, absorption, float), fully programmableLoad output with low voltage and manual disconnect (programmable)Load output protected against over load and short circuitProtected against reverse polarity connection of the solar panels and/or batteryBlueSolar PWM DUO-LCD&USB
All the above-mentioned functions, plus:
Charges two separate batteries Programmable charge current ratio External Temperature sensor