Feature 1Dual MOS antibackflow circuit, low heat generation. Complete 3level smart PWM charging management, high efficiency. 2Large LCD display with backlight, clearly displays system operating information and indicates status and data, convenient to switch modes and parameter configurations. 3Adjustable charging and discharging parameters, with poweroff memory function. Automatically recognize the 12V/24V system voltage. 4Safe to use, builtin short circuit protection, open circuit protection, reverse connection protection, over current protection. Can be used for home, industry, commercial, etc. 5There are corresponding icon marks on the wiring terminals, which are used to connect batteries, solar panels and DC loads. Please install it in a well-ventilated place.Item Type: Solar Charge ControllerMaterial: PlasticRated Voltage: 12V/24V battery voltageMaximum Charge/Discharge Current: 30ASolar Panel Input Voltage Range: Maximum 18-450W/36V-900WCharging Mode: PWMOver Voltage Protection: 17V.34VFull Charge Power Off: 13.7V/27.4VUnder Voltage Power Off: 10.5V/21VOver Discharge Recover Voltage: 12.2V/24.4V .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; }Package List1 x Solar Charge Controller1 x Manual1 x Wire Connector