1,Large LCD Display Screen: Display of charging and discharging current Query of accumulated electricity generated and discharged Temperature display Optical control and delay control The charging and discharging parameters are adjustable With power off memory and other functions. 2,Dual USB Output: The solar charge controller supports dual USB output, maximum current up to 5A, supporting charging for iPhone. 3,Multiple Protection: Built in over current, short circuit protection, open circuit protection, reverse connection protection are all self recovery type, without damaging the controller. 4,Safe Charging: Adopt industrial grade main control chip, complete 3 stage charging management, anti backflow circuit, ultra low heat generation. 5,12V 24V Voltage Automatic Adaptation: Connect the positive and negative poles of the battery to the controller, and the controller will automatically detect the battery voltage. 1 x Solar Controller1 x Instruction Manual Item Type: Solar Charge ControllerMaterial: ABSGross Weight: 202g / 7.1ozProduct size: 12.5x10x3cm / 4.9x 3.9x 1.2inModel: K1688System Voltage: 12V 24V automatic adaptationMaximum Photovoltaic Voltage: 23V at 12V battery 46V maximum at 24V batteryLifting Charge Voltage: 14.4V (12V), 28.8V (24V)Float Charging Voltage: 13.7V (default, adjustable) (12V), 27.4V (default, adjustable) (24V)Discharge Cut Off Voltage: 10.7V (default, adjustable) (12V), 21.4V (default, adjustable) (24V)Discharge Recovery Voltage: 12.6V (default, adjustable) (12V), 25.2V (default, adjustable) (24V)Charging Recovery Voltage: 13V (12V), 26V (24V)Light Controlled Light On Threshold: 8V for photovoltaic panel (with delay for light control lamp on) (12V), 16V for photovoltaic panel (with delay for light control lamp on) (24V)Light Controlled Light Off Threshold: 8V for photovoltaic panel (delay for light control switch off) (12V), 16V for photovoltaic panel (delay for light control switch off) (24V)USB Output: 2 way USB output, 5V 2.5A (maximum)Standby Current:andlt 10mAWorking Temperature: - 35-and60 ℃Purpose: Solar controller Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin