12.4 Inch LCD Display: This battery voltmeter ammeter features a 2.4 inch LCD display that automatically lights up and goes out for easy viewing while reducing power consumption. It also supports mobile app display for easy data viewing and setting adjustment to improve operating ability. 2Integrative Design: This battery voltage current meter has an integrated design with a standard 50MV pure copper shunt for current detection, which has the advantages of low power consumption, low temperature rise, high accuracy, small size and high stability. 3Multifunctional: This battery current voltage power energy meter is multifunctional and can simultaneously display voltage, current, power, temperature, capacity, percentage of remaining capacity, and runtime, and provide a complete historical data curve. 4Secure And Reliable: This battery capacity monitor has alarms for high charging voltage, low discharging voltage, high charging current, high discharging current and overheating, and also has a power failure memory function to record the AH and WH counts and all parameters before the power failure. 5Wireless Data Transmission: This battery gauge monitor supports wireless data transmission, eliminating interference from complex wiring between the display and the detection module. It can be used for various equipment battery power detection and monitoring, RV power monitoring, electric cycle monitoring, battery detection, power monitoring, photovoltaic system detection, power equipment detection. Item Type: Battery Monitor Material: ABS, Acrylic, Red Copper Main Battery Voltage Range: 8V-120V Starting Battery Voltage Range: 0-120V Current Measurement Range: 0.05-500A Capacity: 0.0AH-6500.0AH Energy: 0.0KWH-6500.0KWH Time: 0-900 Hours Power Value: 0.00-999KW Temperature: -20-150 Voltage: (1%+2) Characters Current: (1%+5) Characters Capacity: (1%+5) Characters Temperature: 2C Main Battery Overvoltage Alarm: 0.1-100V Main Battery Undervoltage Alarm: 0.1-100V Charging Overcurrent Alarm: 0.1-500A Discharge Overcurrent Alarm: 0.1-500A Over Temperature Alarm: 0.1-500A Starting Battery Overvoltage Alarm: -20-150 Starting Battery Undervoltage Alarm: 0.1-100V Remaining Capacity Percentage Alarm: 0.1-100V Delayed Alarm Time0-100% Operating Power Consumption: 0-200S Display Language: Typical