Accurately monitor your DC electrical systems with this advanced DC Consumption Meter module, designed for precise measurement of DC voltage, current, active power, frequency, and energy consumption. Featuring a wide current measurement range selectable via external shunt resistors (50A, 100A, 200A, 300A), this meter suits diverse applications and delivers reliable data for efficient energy management. Ideal for industrial and residential use, the module communicates through a UART to RS485 interface supporting Modbus RTU protocol, ensuring compatibility with various automation and monitoring systems. Key Features: · Comprehensive DC Measurements: Measures DC voltage (0.05-300V), current (0.02-300A), active power (0.2-90kW), frequency, and cumulative energy consumption (up to 9999kWh) with 1% accuracy. · Multiple Current Range Options: Choose from 10 available kits including different shunt specifications and communication cables to match your application requirements precisely. · Reliable Communication Interface: Utilizes UART to RS485 for stable data transmission at a baud rate of 9600 with 8 data bits, 2 stop bits, and no parity, supporting key Modbus RTU commands (0x03, 0x04, 0x06, 0x41, 0x42). · Configurable Voltage Threshold Alarms: Set high and low voltage alarm thresholds to monitor electrical parameters, providing alerts when measured voltage exceeds set limits to enhance system protection. · Software Resettable Energy Counter: Easily reset energy consumption readings through software for convenient monitoring cycles. · Compact and Durable Design: The module measures approximately 9 x 6 x 2.3 cm, with lightweight construction ranging from 77g to 287g depending on kit configuration. · Wide Operating Temperature Range: Performs reliably in environments from -20°C to 60°C, suitable for varied industrial and outdoor conditions. Specifications: · Voltage Measuring Range: 0.05 – 300V (use independent 5V power supply if below 7V) · Voltage Resolution: 0.01V · Voltage Accuracy: ±1% · Current Measuring Range: 0.02 – 300A (depends on external shunt) · Current Resolution: 0.01A · Current Accuracy: ±1% · Power Measuring Range: 0.2 – 90kW · Power Resolution: 0.1W · Power Accuracy: ±1% · Energy Measuring Range: 0 – 9999kWh · Energy Resolution: 1Wh · Energy Accuracy: ±1% · Communication Protocol: Modbus RTU via RS485 interface · Default Voltage Alarm Thresholds: High – 300V; Low – 7V · Operating Temperature: -20°C to 60°C · Dimensions: Approx. 9 x 6 x 2.3 cm (3.5 x 2.4 x 0.9 inches) · Weight: 77g to 287g depending on selected kit Package Options: The meter is available in 10 versatile kits, including combinations with RS485 to USB cables and shunt resistors of varying current ratings (50A, 100A, 200A, 300A) to suit different monitoring needs. Note: The RS485 interface is passive and requires an external 5V power supply with >100mA current capacity. For voltage measurements below 7V, an independent 5V power supply via USB is necessary — do not power via PC USB ports to avoid damage. This DC Consumption Meter module is an essential tool for precise energy monitoring and management in DC-powered systems, delivering high accuracy and reliable communication, ideal for professional energy audits, automation projects, and electrical system diagnostics.