1. Build-in industrial -controller.2. Big LCD display,all adjustable parameter.3. Fully 3-stage PWM charge management.4. Build-in short-circuit protection,open-circuit protection,reverse protection,over-load protection.5. USB 5V output ,max current can be 2.5A. mosfet Reverse current protection ,low heat production.This 30A PWM Solar Charge Controller is suitable for 12V 24V lead acid battery,Lithium-ion battery(3 strings of 11.1V lithium batteries);Lithium iron phosphate batteries(4 string of 12.8V).Model Number: CMLApplication: Charger Controller,Voltage Controller,Lighting Controller,Solar System Controller,Solar Working StationMaximum Current: 30ASystem Voltage: 12V/24VDC AUTOCharge : PWMFunction: Light and timer ControlUSB: 5Vcolor:As shownMaterial:plasticPackage Contents:1 x Solar charge controllerOnly 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.