7in1 OLED Multimeter DC Power Meter Module

The 7in1-OLED-MULTIMETER is a compact panel-mount DC power meter module that combines seven measurement functions in a single device. It displays DC voltage, current, power, energy, capacity (Ah), operating time, and ambient temperature on a high-contrast OLED screen with a black background and white characters, offering superior readability compared to conventional seven-segment displays. The module is designed for embedding into power supplies, battery chargers, solar systems, portable power banks, and laboratory test benches, where continuous monitoring of electrical parameters is required. Voltage measurement covers 0V to 99.9V DC with 0.1V resolution and ±0.5% accuracy, while current measurement spans 0A to 9.99A with 0.01A resolution and ±1% accuracy. Power is displayed up to 999.9W, energy up to 99.999Ah, time up to 99 hours and 59 minutes, and temperature from -15°C to 60°C. The module measures only 48 × 28 × 22 mm, making it suitable for space-constrained installations. Two data groups (0 and 1) allow storage of capacity and energy values across power cycles, and a front-panel button switches between groups and resets accumulated values. This OLED electrical meter is a practical solution for engineers, makers, and technicians who need reliable multi-parameter monitoring in a small form factor.