Features 1、Remote And Accurate Testing: The WiFi enabled RV battery monitor supports remote real time monitoring via APP, WiFi, and Bluetooth connectivity, allowing users to check the battery status anytime, anywhere using their mobile devices. Say goodbye to traditional close range monitoring methods and effortlessly control battery conditions whether for outdoor, household electricity use, or other scenarios. 2、2.4 Inch HD Color LCD Screen: The battery capacity voltage indicator features an optimized interface with larger, clearer text and responsive silicone keypad for slick operating and comfortable tactile feedback. With dark and light modes, the display ensures clear visibility of information in any lighting conditions. 3、Real Time Display: The battery voltmeter ammeter is a versatile Coulomb meter that measures various physical parameters such as voltage, current, power, charge discharge capacity, watt hour, and time. It offers multiple guard functions including over voltage, under voltage, over current, over power, over temperature, and time limited guard by setting parameters accordingly. 4、Built In Buzzer: The battery capacity voltage monitor gauge is equipped with a buzzer that reminds users immediately upon reaching preset low capacity or voltage levels. This feature, along with pop up notifications, helps users stay informed of device status and prevent unexpected incidents. 5、Good Compatibility: Compatible with Li iron P, Li ion, Ni metal hydride batteries, and other battery types, the battery voltage current meter is suitable for batteries with voltages ranging from 10-100V. Enjoy peace of mind and ensure safety with our versatile and user friendly battery monitor. Specification Item Type: Battery Monitor Model: KM140F Material: ABS, Brass, Silicone Screen Size: 2.4 Inch Sampling Method: Shunt Voltage Testing Range: 10-100V Current Testing Range: 0-400A Current Resolution: 0.01A Capacity Display Range: 0-100% Power Testing Range: 0-40KW Power Resolution: 0.0001W Ah Testing Range: 0-9999.9Ah Capacity Resolution: 0.001Ah Bluetooth Connection Distance: Approx. 10m / 32.81ft Wifi Connection Distance: Approx. 10m / 32.81ft Remote Connection Range: Global Voltage Accuracy: ±5%+0.02V Current Accuracy: ±2+0.01A Sampling Rate: 5 times / second Display Power Consumption: 0.9W Screen Off Time: 10S, 20S, 30S, 40S, 50S, 60S, AUTO (Screen on when discharge current ≥30mA, screen off when discharge current <30mA and time >20s) Package List 1 x Battery Monitor 1 x Sampler 1 x 1m Red Positive Wire 1 x 5m Communicating Line 1 x Manual