Description:     12V\/24V 10A PWM Solar Charger Controller Battery Charging Regulator     Features:    Build-in industrial mirco controller Intuitive 25%-100% power indicator Fully 4-stage PWM charge management Reverse current protection、 low heat production Build-in short-circuit protection、 open-circuit protection、reverse protection、 over-load protection   Specification:   Batt voltage: 12V\/24V Auto Adapt Current: 20A Max solar input: 41V Charge drop: !#!amp!*!lt;0.2V Disharge drop: !#!amp!*!lt;0.25V Equalization: 14.6V Bulk: 14.4V Acceptance: 14.2V PWM Float: 13.8V Charge reconnect: 13V Disharge stop: 10.8V Disharge reconnect: 12.6V Self-consume: !#!amp!*!lt;10mA Voltage of open light: Solar panel 8V(Light lights delay) Voltage of close light: Solar panel 8V(Light off delay) Temperature compensation: N\/C Operating temperature: -35\u2103~60\u2103 Size: 134x70x31mm(Length、Height、Thickness)   Note: 1.All red color voltage x2 while using 24V system. 2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors、 the picture may not reflect  the actual color of the item. Thank you!   Package includes:    1 x Solar Charger Controller 1 x User Manual   Details pictures: