Capacity/Energy/Running Time Statistics: Statistics begin automatically when the device is powered on (ON). The last recorded value is displayed when powered off (OFF) and recording resumes automatically upon power-on. In the corresponding interface, press and hold the ON/OFF button for 2 seconds to reset the statistics. Maximum Capacity (OAH)/Energy (OPH) Setting: When OAH or OPH is enabled, the output automatically shuts down and the display flashes “OAH” or “OPH” if the measured capacity or energy exceeds the set limit. After the alarm is cleared, the capacity/energy statistics reset automatically. Maximum Discharge Time (OHP) Setting: When OHP is enabled, the output automatically shuts down and the display flashes “OHP” if the operating time exceeds the set maximum discharge time. After the OHP alarm is cleared, the time statistics reset automatically. This function supports precise timed power delivery. Note: When OAH/OPH and OHP are disabled, the device continuously records capacity, energy, and running time. When enabled, the output shuts down upon reaching the set limit. Running time operates in countdown mode. Material: Plastic Color: As shown Package Contents: 1 x DC-DC Buck Boost Converter