Feature 1Convenient Operation: The operation is more convenient, compared with other controllers that need to be connected to electricity, this controller can be started without electricity, and the solar panel can be connected to charge the mobile phone. 2Fast Charging: The MPPT solar controller has high charging efficiency, auto focus MPPT tracking charging, high charging efficiency, uninterrupted detection and charging, and bidirectional focus tracking. 3Multiple Intelligent Protection: The charge controller has a variety of intelligent protection functions, including over current protection, short circuit protection, reverse polarity protection, open circuit protection and automatic recovery. 4With Display: Using industrial grade chip with high precision and high accuracy, and real time clearly display discharge current, power generation can be clear at a glance. 5Wide Applicability: Solar controller is easy to install and use, suitable for home, industrial, commercial and other places.SpecificationItem Type:SolarChargeControllerSize: Approx. 11.5 x 6 x 2cm / 4.53 x 2.36 x 0.79in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }System Voltage: 12V / 24V Self AdaptionTechnical Specifications: USB-PD, QC3.0Advantages: Can be started without power, directly connected to the solar panelPackage List1 x SolarChargeController1 x Instruction Manual