HQST 30 Amp PWM Solar Panel Regulator Charge Controller with LCD Display and USB Port (30A) HQST 30A Amp solar charge controller is an intelligent and multifunctional solar charge controller with a dual USB ports design to charge electronic devices. 12V/24V system voltages are automatically recognized. With temperature compensation employed, charging parameters can be automatically adjusted. A wide range of load working modes facilitate the product's application to different types of load. All of the controlling parameters can be reset flexibly to satisfy the user's particular needs. It provides a dot matrix graphic LCD screen and a human-machine interface with a key, which makes operation on the interface rather convenient. The product provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection. Light control: When daylight begins the light source will turn off; meanwhile, the solar panels will charge the batteries. When there is no sunlight the garden light will switch on. HQST 30 Amp solar charge controller is an intelligent and multifunctional solar charge controller. It adopts a customized LCD display screen, which makes operation on the interface rather convenient. All of the controlling parameters can be reset flexibly to satisfy the user&#039;s particular needs. Light control: When daylight begins the light source will turn off; meanwhile, the solar panels will charge the batteries. When there is no sunlight the garden light will switch on. Features a 5V 1A USB output that can be used to charge mobile phones, tablets, speakers, etc. Rated Current: 30A System Voltage: Automatic Recognition of 12V/24V Overvoltage Protection: 16.0V;x2/24V Charging Recovery Voltage: 13.2V Max. PV Input Power: 400W (12V), 800W (24V) Dimensions:6.5x 4.1x1.9 In. Weight: 0.86 Lb