The controller has light control and time control, can control the discharge by sunlight and time Built-in overcurrent, short-circuit protection, reverse connection protection, open-circuit protection, all automatic recovery, no damage to the controller With LCD display for easy operation System voltage 12V, 24V can be automatically identified Ternary lithium, lithium iron phosphate, lead-acid batteries can be function Can charge ternary lithium, lithium iron phosphate, lead-acid batteries, charge and discharge parameters adjustable. Complete 3-stage PWM float charging management for better battery protection, built-in over-current/short-circuit protection, all self-recovery type, no damage to controller, dual MOS anti-backflow circuit, ultra-low heat generation Colour:green Material:ABS+aluminum Size:17.5x12x4.8cm Package Contents: 1 x Solar Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.