Feature:1. When the multifunction current and voltmeter is measuring, the circuit takes power from the power input port, and no additional power cord is required.2. The LCD screen display can display information such as voltage, current, power, discharge mAH, discharge time and working temperature.3. The protection mechanism is complete, with undervoltage protection, overvoltage protection, overcurrent protection, overpower protection, overtemperature protection, overtime protection and overcapacity protection.4. By setting appropriate undervoltage protection and overvoltage protection thresholds, the battery overcharge and overdischarge control functions can be realized.5. Timed and quantitative battery charging and discharging can be realized by setting appropriate overtime protection and overcapacity protection thresholds.Specification:Condition: 100% Brand NewItem Type: Multifunction Volt-AmmeterMaterial: Plastic HousingProduct Size: Approx. 79 x 42 x 26mm/3.1 x 1.7 x 1inModelZK-U15Input VoltageDC 5V-38V(With Anti-Reverse Connection)Input Current0.03A-5.00AOperating Current<=30mAVoltage Accuracy(1%+1 Word)Accuracy of Current(1%+1 Word)Working Environment Temperature-15-50LVP Threshold of Undervoltage Protection4.8V by Default (Adjustable between 4.8V-38V)OVP Threshold for Overvoltage ProtectionDefault 38.0V(Adjustable between 4.8V-38.0V)OCP Threshold for Overcurrent ProtectionDefault 5.5A (Adjustable between 0.5A-5.5A)OTP Threshold of Overtemperature Protection80(Adjustable between 40-80)OCP Threshold for Overcurrent ProtectionDefault 5.5A (Adjustable between 0.5A-5.5A)OPP Threshold of Overpower ProtectionDefault 200W(Adjustable between 1W-200W)Detailed Product Function:1. LCD screen displayIn the normal mode, the LCD screen displays the input voltage and working temperature in the upper; the lower displays the real-time current, power, capacity and discharge time. In the protection mode, the LCD screen displays the protection codes.In the setting mode, the LCD screen displays each setting parameter codes and parameter threshold.2. Sound and light alarmWhen the voltage and current meter output is turned on, the RUN indicator light is always on and the buzzer does not sound; when it is turned off, the RUN indicator light does not light, and the buzzer does not sound. After entering the protection mode, the buzzer will alarm and the RUN indicator will flash.3. Automatic statistics of charge and discharge capacity and time. As long as the output is turned on (the RUN indicator is always on), the statistics will be started, and the output will be turned off (the RUN indicator is not on), and the statistics will be stopped. In the interface, long press the button-the corresponding data can be cleared. StartBefore statistics, please clear the statistics data to 0. The maximum discharge capacity (OAH) and maximum discharge time (OHP) can be set on or off in the setting mode (default off). After being turned on, the threshold value can be set. If the threshold value is exceeded, the output will be automatically turned off and the buzzer will alarm to achieve no Charging and discharging the battery on duty.4. By setting appropriate over-voltage protection threshold and under-voltage protection threshold, battery overcharge and overdischarge control can be achieved. For detailed operation, please refer to the product application example.5. Complete software and hardware protection mechanism, and the software protection threshold can be adjusted. After software protection, the output is turned off.Hardware Protection:The input port of the module has anti-reverse connection protection, and the reverse connection will not burn.Software Protection:OVP overvoltage protection (default 38V, can be set by yourself, after overvoltage protection, the RUN indicator flashes, and the LCD interface displays OVP. During battery charging, setting a proper threshold can effectively prevent battery overcharging);OCP overcurrent protection (default 5.5A, can be set by yourself, after overcurrent protection, the RUN indicator flashes, and the LCD displays OCP);OPP over power protection (default 200W, can be set by yourself, after over power protection, RUN indicator flashes, LCD shows OPP);Steps for Usage:1. First connect the battery and load, and check whether the wiring is correct.2. The voltage and current meter enters the normal interface. If it is not in the normal interface, short press the ON button to return to the normal interface.3. Long press the ON button to enter the setting interface, and SET is displayed in the lower left corner of the LCD screen.4. Short press the SW key to switch the parameters to be set. Short press + or-to increase or decrease the parameter by 1. Long press + or-to continuously increase or decrease the parameter. In the battery discharge application, the OVP needs to be adjusted above the maximum battery voltage, the maximum is 38V. Adjust LVP to the lowest voltage allowed by the battery (this