Features: Build-in industrial micro controller. Big LCD display, all adjustable parameter. Fully 3-stage PWM charge management. Build-in short-circuit protection, open-circuit protection, reverse protection, over-load protection. Dual mosfet Reverse current protection, low heat production. Specification: Condition: Brand New Material: ABS Color: As Picture Shown Options: 10A, 20A, 30A, 40A, 50A, 60A Battery Voltage: 12V 24V Auto Solar panel voltage: 12V, 18V solar panel, 24V, 36V solar panel Float charge: 13.7V(defaul, adjustable) Discharge stop: 10.7V(defaul, adjustable) Discharge reconnect: 12.6V(defaul, adjustable) Self-consume: <10mA USB output: 5V / 2A Maximum Package list: 1 x PWM Controller 1 x User Manual