... 4.Temp. compensate 12V/24V Single output pwm Solar charge controller SR-L1.PWM2.Digital LED display3.Various protection4 ... , over load, short circuit protection, reverse polarity protection and TVS lightning protection.5. Temperature compensation function.ModelSR-L ... action.Circuit protectionOver-charge, over-discharge, short circuit and over-load protectionAll the protections are harmless to any ...