Feature:1. SUPPORT TWO WAY ACCURATE TESTING: Say goodbye to the traditional close range monitoring method, WiFi coulomb meter support remote real time monitoring function, support APP, wifi, Bluetooth online. No matter where you are, as long as terminal devices such as mobile phones are connected to the WiFi coulomb meter, you can check the battery status anytime and anywhere. Whether it is outdoor adventure, home electricity, or other scenarios, you can easily control the battery situation, use electricity more worryless2. 2.4IN HD COLOR LCD SCREEN: The RV coulomb meter interface is optimized and upgraded, and the text is larger and clearer. The buttons are made of silicone material, which increase the comfortable touch based on the smooth operating and fast response speed. And with dark mode and light mode, to ensure that the display content is clearly visible3. REAL TIME DISPLAY, WITH PROTECTING: KM-F series voltammeter is a new type of coulomb meter, can measure voltage, current, power, charging and discharge capacity, watt hour, time and other physical parameters. Set parameters to implement multiple protecting functions, such as overvoltage protecting, undervoltage protecting, overcurrent protecting, overpower protecting, overtemperature protecting, and time limited protecting4. BUILT IN BUZZER AND POWER OFF STORAGE: Coulomb meter set low capacity or low voltage alarm, once the value is lower than the preset value, the buzzer will sound immediately, while the pop up window reminder, so that you can keep known of the device status, avoid accidents, so that safety is within arrival5. MULTI BATTERY UNIVERSAL: Battery capacity meter is compatible with LFP, li ion, Ni metal hydride batteries, and other types of batteries, as long as the battery voltage in the measurement range of 10-100V all applySpecification:Item Type: RV Coulomb MeterModel: KM110FMaterial: ABS, brass, siliconeScreen Size: 2.4inSampling Method: ShuntVoltage Testing Range: 10-100VCurrent Testing Range: 0-100ACurrent Resolution: 0.01ACapacity Display Range: 0-100 percentPower Testing Range: 0-10KWPower Resolution: 0.0001WAh Testing Range: 0-9999.9AhCapacity Resolution: 0.001AhBluetooth Connection Distance: Approx. 10m / 32.81ftWifi Connection Distance: Approx. 10m / 32.81ftRemote Connection Range: GlobalVoltage Accuracy: 5%+0.02VCurrent Accuracy: 2+0.01ASampling Rate: 5 Times/sDisplay Power Consumption: 0.9WScreen Off Time: 10S, 20S, 30S, 40S, 50S, 60S, AUTO(screen on when I15mA during discharge, screen off when I<15mA and time>20s)ccc.Package List:1 x RV Coulomb Meter1 x Sampler1 x 1m Red Positive Line1 x 5m Communication Line1 x User ManualNote:Before the first use, correctly set the battery effective capacity and current remaining battery percentage. If the battery effective capacity is unknown or the current remaining battery is unknown, follow these steps to check:1. Charging the battery pack to full.2. Input the preset battery capacity setting in the system settings. For example, if the battery rated capacity is 150AH, set 150AH as the preset battery capacity. (you can check the rated capacity on the battery nameplate or consult the battery manufacturer.)3. Set the remaining capacity percentage to 100 percent, then discharge the battery pack.4. After discharging, the remaining capacity value displayed on the screen is 10AH. The preset capacity value of 150 minus the remaining 10 equals the actual capacity of the battery, which is 140AH. This means the battery has discharged a total of 140AH and cannot be discharged further. Therefore, set the actual discharged capacity of the battery to 140AH as the preset capacity and the capacity percentage to 0%. This completes the setup of the battery.