1、INTELLIGENT SYSTEM: The solar charge and discharge controller adopts automatic identification of system voltage level and intelligent PWM charging method. 2、LARGE DISPLAY SCREEN: The solar charge controller has a large screen LCD display, graphic LCD graphic signs, and simple button operation. 3、FULL PROTECTION: Built in charge and discharge safety hour accumulation, battery reverse discharge, undervoltage, reverse connection, overload, short circuit protection. 4、TEMPERATURE COMPENSATION: The solar charge discharge controller has automatic temperature compensation, adjustable charge and discharge control parameters. 5、PVC MATERIAL: The shell of the solar charger is made of PVC material, which is insulated, heat resistant and has a long service life. Item Type: Solar Charge Controller Material: PVC Product Size: Approx. 13.3 x 7 x 3cm / 5.2 x 2.8 x 1.2in USB Output: 5V Output Method: USB Conversion Rate: 98-99% Working Temperature: -35℃-60℃ Scope of Application: Solar panels, etc. Weight: Approx. 141g / 5oz 1 x Solar Charge Controller