Specifications:Display: LCD ScreenBatt Voltage: 12V/24V auto adaptCurrent: 10A, 20A, 30A, 40A, 50A, 60AMax solar input: 12V battery, the highest 23V; 24V battery when the highest 46VFloat Charge: 13.7V(defaul, adjustable)Discharge stop: 10.7V(defual, adjustable)Discharge reconnect: 12.6V(defaul, adjustable)Charge Reconnect: 13VVoltage of open light: Solar panel 8V(Light lights delay)Voltage of close light: Solar panel 8V(Light off delay)USB Output: 2 way USB output, 5V/2.5A(MAX)Self-consume: <10mAOperating Temperature: -35~+60Controller Size: (L)X(W)X(H) 13.3x7x3.5cm /5.24″x2.76″x1.38″(appr.)Solar Panel Voltage: 18VSolar Panel Power: 20WSolar Panel Size: (L)X(W)X(H) 34×23.5×1.5cm /13.39″x9.25″x0.59″(appr.)Features: Build-in industrial microcontroller The 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 USB output, the maximum current of 2.5A, to support Apples mobile phone charging Dual MOSFET reverse current protection, the low heat production.System Connection:1.Connect the battery to the charge regulator-plus and minus2.Connect the photovoltaic module to the regulator-plus and minus3.Connect the consumer to the charge regulator-plus and minusNOTE: The reverse order applies when deinstalling, an improper sequence order can damage the controllerSafety Instructions:1. Make sure your battery has enough voltage for the controller to recognize the battery type before first installation.2. The battery cable should be as short as possible to minimize loss.3. The regulator is only suitable for lead-acid batteries: OPEN, AGM, GELit is not suited for nickel-metal hydride, lithium ions or other batteries.4. The charge regulator is only suitable for regulating solar modules. Never connect another charging source to the charge regulator.Package Included:1 x Solar Charger Controller1 x Solar PanelNote:Please consider the actual sizes shown in the listing as the pictures are generally enlarged to show detail.