Mini OLED Digital Voltmeter DC 0-30V

A compact digital voltmeter designed for embedded applications where space is critical. This ultra-thin meter measures DC voltage from 0-30V with a small 0.5-inch OLED display that fits into tight spaces while remaining clearly readable. The 12-bit ADC sampling delivers approximately 0.7% detection accuracy, making it suitable for monitoring power supply outputs, sensor voltages, and battery levels in industrial and automotive settings. The meter draws less than 20mA and operates on any DC source between 3.5-30V, so it can run directly from the systems it's monitoring. Refresh rate defaults to 5Hz for standard voltage tracking, with a configurable switch to 10Hz for applications that need faster response to voltage changes. The three-digit display automatically handles decimal point positioning. Simple short-circuit configuration options let you toggle between showing the voltage symbol and adjusting refresh speed to match your setup.