This product is a multifunctional LCD solar controller with clock display function and 7 working modes. 7 working modes adjustable function, charging mode, light control mode, light control + timing control mode, general control mode, manual control mode, timing control mode and test mode , where the test mode is only for factory testing. Features: Large LCD screen, supports displaying the working status of the battery, solar panel working status display, mode control display, charging output status and each parameter display, normal status display and default. 7 working modes are charging mode, light control mode, light control mode + timer control mode, general control mode, manual control mode , timing control mode and test mode, test mode is only for factory testing. Four kinds of voltages automatic identification, it will automatically identify DC12V/24V, DC36V, DC48V by it -same. Auto focus tracking charging, high charging efficiency, non-stop detection during charging, two-way focus tracking. Equipped with time setting function and 'a function for setting parameter values. The charge control function is not limited to any mode restrictions, as long as the charging conditions are met, it will be charged immediately. The control function The discharge rate varies in different control modes, in the absence of faults, as described below: Charging mode: no discharge under any condition. Mode light control: when the controller detects night, the discharge opens with a delay of 10 minutes; when daytime is detected, the discharge is stopped with a delay of 10 minutes. Light control + timer control mode: when the controller detects nighttime, the delay is 10 minutes to start the discharge and starts countdown - time, when the timer is at 0, the discharge stops. The maximum delay time is 23:59. General control mode: if there is no fault, it will keep the discharge state. Manual control mode: use " " to turn on the discharge or stop the discharge. Timing control mode: turn on the discharge at regular intervals and turn off the discharge at regular intervals. Test: same as light control + time delay mode , but with less than 10 minutes time delay. The controller in low voltage protection, if you still need to discharge, you can long press "" button for 5 seconds, you can still exit, but only manually stop discharging, note that this function may damage the battery, please be careful. Features: Name: Solar Controller Material : plastic + aluminum Current: 80 A, 100 A (optional) Input voltage: DC12V/24V, DC36V, DC48V Output voltage: DC12V/24V, DC36V, DC48V, DC5V/1.5A*2USB Operating temperature: -25 to 55 Item size: 198 * 180 mm / 7.80 * 7.09 inch br> Package size: 195 * 184 * 66 mm / 7.68 * 7.24 * 2.60 inches Package weight: 80A: 900g / 1.98lb 100A: 1150g / 2.54lb Packing List: 1 * Solar Controller 1 * Guideline