1.UP Button: Short press to switch the display percentage and time, long press for 5 seconds to switch the mode, charging mode: IN, discharging mode: OUT
2.SET Button: short press to view the currently set parameters; long press the SET button to enter the parameter setting interface.
3.DOWN Button: Short press to turn off/on the relay enable (emergency stop function), after the LCD display is OFF, the relay is disconnected.

Setting：
UP: Voltage Upper Limit
dn: Voltage Lower Limit
OP: Conduction Timed
OP: Delayed Connection time (0-999 seconds)
FOP in Discharge Mode: Forced Start Time (0-10 seconds)

Charge Mode IN:
1.Relay turn ON and battery starts to charge from charger, when Battery Voltage is less than the Lower Limit Voltage Value dn.
2.Relay turn OFF and battery stops to charge, when Battery Voltage is more than the Upper Limit Voltage Value UP.
3.The symbol IN will flashing when charging.
4.It display “nbE” if no battery is connected at the output terminal.

Discharge Mode OUT:
1.Relay turn ON and output voltage, battery starts to discharge, when Battery Voltage is more than the Upper Limit Voltage Value UP.
2.Relay turn OFF and output no voltage, battery stops to discharge, when Battery Voltage is less than the Lower Limit Voltage Value dn.
3.The symbol OUT will flashing when discharging.