Feature: 1. [PVC Housing]: Adopting industrial grade ABS with impact resistant, high temperature resistant, and other characteristics, is safer. Silicone buttons design, comfortable to use. 2. [Accurate Measurement]: 32 bit main control chip, real time capacity detection, accurate data, online fine tuning of voltage and current values, endurance time display support. 3. [Bidirectional Current Detection]: The detection of charging and discharging users can easily detect bidirectional current, without changing the wiring direction. 4. [Memory Function]: It can memorize the ampere hour (AH) before the power failure. The ampere hour (AH) can be filled or cleared with one key, which does not affect the direct charging and discharging measurement. 5. [Version with Base]: The diverters and screws are made of pure copper materials with high conductivity and low heat generation. Its own low power consumption, standby state will not consume too much battery power. The small sealing springs are all made of pure copper to ensure more accurate sampling accuracy. It is a base version with mounting fixing holes on both sides, easy to install and fix. 6. [Wide Applications]: Suitable for applications that require monitoring of output voltage and current, as well as battery charging and discharging. Suitable for RV power monitoring, electric bike monitoring, car battery power monitoring, battery testing, photovoltaic system testing, power supply testing, etc. Specification: This is a multi function meter that can display voltage, real time current, real time power, remaining capacity, and usage time in real time. The meter uses a 2.4 inch color LCD display that shows comprehensive, clear, and easy to read data. This meter is for applications that require output voltage and current monitoring, as well as battery charging and discharging. Specifications: Name: Coulometer Set Material: PVC Type: 500A diverter+lid+shielded wire Display: LCD display Voltage measurement ranges: 8-100V Current measurement ranges: 0.02-100A (100A diverter); 0.06-300A (300A diverter); 0 . 2-500A (500A diverter) Capacity measurement ranges: 0.1AH-99999AH Power value: 50KW Accuracy of voltage: ±1%+2words Accuracy of current: ±0.5%+2words Communication baud rate: 9600bps Measurement rate: 20 times/sec Item size: Display: 86 * 53 * 17mm / 3.39 * 2.09 * 0.67in 500A diverter with base: 84 * 38 * 45mm / 3.31 * 1.50 * 1.77in Package size: 160 * 160 * 50mm / 6.30 * 6.30 * 1.97in Package weight: 500A diverter+lid+shielded wire: 520g / 18.34ounce . Package List: 1 * Display 1 * Diverter with Base 1 * Shielded Wire 1 * Display Lid 1 * 5Pin Cable 1 * Cable 2 * Copper Lug ​​​​​​​1 * Wrench