Features: 1.Using industrial?grade main control chip, good performance and durability. 2.Large?screen LCD display, adjustable charge and discharge parameters, with power?off memory function. 3.Complete 3?stage charging management to better meet your needs. 4.Built?in over?current, short circuit, open circuit, reverse connection protection, all are self?recovery type, do not damage the controller. 5.Dual USB output, maximum current up to 2.5A, dual MOS anti?backflow circuit, ultra?low heat generation. Specification: Condition: 100% Brand New Item Type: Solar Charge Controller Material: ABS Color: As the Picture Shown System Voltage: 12V/ 24V (Automatic Identification) Maximum Photovoltaic Voltage: 23V at 12V Battery; 46V at 24V Battery Increase Charging Voltage: B01 Sealed Type: 14.4V, B02 Colloid Type: 14.2V, B03 Open Type: 14.6V. Floating Charge Voltage: 13.7V (Default Value, Adjustable Range: 12.7-15V) Discharge Cut-off Voltage: 10.7V (Default Value, Adjustable Range: 9-11.3V). Discharge Recovery Voltage: 12.6V (Default Value, Adjustable Range: 11.5-13V). Charge Recovery Voltage: 13V Light Control Threshold: 8V Photovoltaic Panel (There is a delay when the light is switched on) Light Control off Threshold: Photovoltaic Panel 8V (There is a delay when the light is switched off) Standby Current: