📊 Real-Time Digital Display: Features a built-in voltmeter with ±0.1V accuracy for instant monitoring of your power status.

🔘 One-Touch Control: Easily switch between input (IN) and output (OUT) voltage displays with a single tactile button.

🛠️ Advanced Self-Calibration: Built-in function allows you to manually calibrate voltage readings for ultra-high precision requirements.

🔌 Easy Wiring: Includes heavy-duty terminal blocks for screw-in connections—no soldering iron required!.

📉 High-Efficiency Conversion: Adopts a 150KHz internal oscillation frequency for low power consumption and high reliability.

🛡️ Smart Memory: Automatically saves your last display setting (IN or OUT), even after the power is turned off.

🔋 Broad Step-Down Range: Perfect for converting batteries, transformers, and industrial power from 40V down to 1.25V.

💡 Power Saving Mode: Turn off the voltmeter display entirely by holding the switch for 1–4 seconds to conserve energy.

💪 Reliable Current Output: Supports a maximum output of 3A, with a recommended continuous working current of 2A for longevity.