This product is a universal instrument, color LCD screen, low power consumption, Long sleep timer, can display battery voltage, can be used in a variety of lighting conditions. Features:1. Patented product, neutral packaging production, with simple dustproof waterproof surface, full protective case.2. Colorful liquid crystal material, bright clear display, displays soft night.3. To customize the battery type, suitable for lead-acid, lithium-ion, lithium-iron batteriesPhosphate, metal hydride battery.4. To display the percentage of remaining battery power, voltage, temperature value.5. 10 - 100V wide input voltage, reverse protection.6. The product can go to sleep after 10 seconds.7. The red low power sign flashes to remind.8. Installation is simple, with buckle, no screws.9. Open Programming ModeParameter:Product Size: 61.5mm*33.5mm*13.5mmInstallation Size: 58.5mm*28.5mmDisplay Size: 36mm*19.5mmWorking Voltage: 10V-100VOenergy Dips: 5-6mA (LED ON)Voltage Accuracy: ± 0.1 (typical),± 0.5 (Max)Sleep Power: 6-12uA (20V)Operating Temperature:-10 - 55°CInstruction:1. PH2.0 end products supporting the use of wire, connected to the PCB surface should be disconnected.2. External NTC temperature sensor, please put the sensor to measure the temperature of the parts, do not squeeze the sensor (selective assembly).3. The red line to the positive terminal, the black line to the negative terminal.4. When you turn on the instrument, which shows the battery power percentage, voltage value, and analog battery symbols.5. Press the button to turn off the instrument. In closed mode, you can wake up the instrument by pressing theAny button.6. Click the button, you can change the voltage value and temperature value display.7. The battery symbols on the display interface, from right to left, are 7 display box representing the Low to High Pool Power.8. The voltage at the display interface is measured in real time, and the voltage value is displayed at 10-100V.9. The percentage on the display interface is the percentage of battery power remaining10. When the battery is connected to a charger or discharge with a high-current one, the display's parameters will change11. A red lightning flashes when the battery is low12. If the battery specification is exceptional, you can enter set 3-mode and reset the upper and lower limits of theMeasured battery voltage. Note:The default setting is suitable for use in 12V lead-acid batteries. If you want to set up other kinds of batteries or enter the setting mode and delay the sleep timer, please feel free to , we will send you electronic instructions in English. Note: Please allow 1-3mm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:1pcs Battery Indicator Voltage Monitor