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. Condition: 100% Brand New Item Type: Controller Material: ABS Color: As shown in the picture Product Size: Approx. 13.6 x 7cm / 5.4 x 2.8in 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 1 x Controller 1 x User Manual