Feature: 1. Built‑in microcontroller, one‑key setting, digital display, automatic memory function, use it with confidence. 2. 4 level PWM charging management, large LCD screen clearly displays condition and data, easy to switch modes and parameter configurations, all parameters can be adjusted. 3. This controller has double reverse current protection, built‑in short circuit protection, open circuit protection, reverse connection protection, overload protection, generates low heat. 4. Easy to install and operate, the charging controller should first connect the battery, then the solar panel, and finally connect the load, disassembly order is opposite to wiring order, with double screw backflow protection. 5. Small, easy to carry and store, convenient, can be used for a long time, a good solar regulator. Specification: Condition: 100% Brand NewItem Type: ControllerMaterial: ABSColor: As shown in the pictureProduct Size: Approx. 13.6 x 7cm / 5.4 x 2.8in Rated Voltage: 12V 24V automatic (if your battery is 12V, the maximum solar panel input is 25V 600W, if your battery is 24V, the maximum solar panel input is 50V 1200W) USB Parameters: 5V Current: 50A The regulator is just suitable for lead-acid batteries: For OPEN, for AGM, for GEL Not Applicable for: Ni-MH, Li-ion or other batteries Scope of Application: Home, outdoor, courtyard, commercial, etc..Weight: Approx. 159g / 5.6oz Package List: 1 x Controller1 x User Manual Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.