LCD Display and Power-off MemoryLarge-screen LCD solar controller, charge and discharge current display, cumulative power generation and discharge power query, light control delay control; adjustable charge and discharge parameters, with shutdown memory and other functions. Dual USB 5V outputDual USB output, maximum current 5V 2.1A. Equipped with 6 types of protection, the system control parameters are adjustable, easy to install and use. Built-in short circuit protection, open circuit protection, reverse connection protection, overload protection, reverse current protection, overheat protection; if the fault is removed, the controller will automatically recover. Easy ReadingWhen the solar panel is charging, the arrow between the panel icon and the battery icon will flash quickly, when the battery is fully charged, the PWM controller will flash slowly and stop charging. SizeSolar panel charger controller size: 122 x 100 x 33 mm; Rated voltage: 12V/24V; Rated current: 30A; Maximum voltage: up to 23V for 12V batteries, up to 46V for 24V batteries; maximum input voltage: 390W. Easy to installWith 5.5 x 2.1mm DC interface, the solar panel charger controller can be directly connected to a portable folding solar panel, and the DC interface can directly output 12V charging, which is easier to install. Specifications: Name: Solar Controller Voltage: DC 12V/24V automatic identification Applicable battery type: 12/24V lead-acid battery Self-consumption: <10mA Charging method: PWM Overcharge protection: 14.4V/28.8V Overcharge and float charge: 13.7V/27.4V Charging recovery voltage: 12.6V/25.2V Overdischarge protection: 10.7V/21.4V. 4V - Overdischarge Recovery: 12.6V/25.2 V Dual USB output: 5V/2.1A (charging mobile phones, iPads, etc.) Working temperature: -35 to 60. Product size: 122 x 100 x 33mm. Product weight: 200g. Note: Solar panel voltage corresponding to system selection: 12V-23V. The board corresponds to a 12V battery. 24V-40V board corresponds to a 24V battery. How many watts (W) of solar panels can be connected to 30A? 12V system, the maximum solar panel can be connected to 300W 24V system, the maximum solar panel can be connected to 600W. Notes: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Please allow 1-3mm error due to manual measurement. Thank you for your understanding. Package Included: 1 x Solar Panel Controller, 1 x User Manual