Morningstar SG-4 Charger controller, 12 volt 4.5 amps

-100% solid state
-True 0 to 100% PWM duty cycle
-Setpoint accuracy to 60 mV
-Temperature compensation
-Rated for 25% overloads
-No need to derate
-Self-consumption is 6 mA
-Fully encapsulated in epoxy potting
-ABS plastic, impact-resistant case
-Outdoor rated connecting wires