Feature:1. Built‑in microcontroller, one‑key setting, digital display, automatic memory function, complete 4‑level PWM charging management.2. Double reverse current protection, low heat generation, built‑in short circuit protection, open circuit protection, reverse connection protection, overload protection.3. The controller is an intelligent multifunctional solar charge and discharge controller, which can adjust and control the charge and discharge of solar panels in a variety of venues.4. The product uses a fixed LCD display with a very friendly interface, which can flexibly set various control parameters to perfect meet your various application requirements.5. This is a new type of solar controller, which can completely satisfy your home photovoltaic system (including home lighting system).Specification:Condition: 100% Brand NewItem Type: Solar Charge ControllerMaterial: ABSWeight: Approx. 158g/5.6ozUSB Output: 5VProduct Size: Approx. 13.6 x 7cm/5.4 x 2.8inRated voltage: 12V 24V Automatic (if your battery is 12V, the maximum solar panel input is 25V 520W, if your battery is 24V, the maximum solar panel input is 50V 1040W)Current: 40AApplicable for Lead-Acid Batteries: for OPEN, for AGM, for GELNot Applicable: Ni-MH, Li-ion or Other BatteriesScope of Application: Home, Courtyard, Outdoor, Commercial, etc. Package List:1 x Solar Charge Controller1 x InstructionsNote:The reverse order applies when unloading. Improper order will damage the controller!