Programmable DC Power Supply 400V 1A, Adjustable Laboratory Bench Source with 4-Digit LED Display – High Precision Power Unit for School Lab Testing Motor Repair & DIY Projects

Product Description This High-Precision Adjustable DC Power Supply is designed for factory testing, laboratory research, electronic repair, and production line applications. It provides stable constant voltage and constant current output with intelligent control, data storage, and clear LCD display. Suitable for mobile phone repair, battery charging, component aging tests, and scientific experiments, it delivers reliable performance for professional and educational use. Key Features ♥ Wide Application Range Suitable for factory testing laboratory teaching electronic repair battery charging and production line use ♥ Constant Voltage and Current Mode Ensures stable output with low ripple noise and high precision control ♥ Data Memory Function Stores four groups of voltage and current parameters for quick recall ♥ Clear LCD Display Eye-protection screen supports long-time operation with high resolution readings ♥ Intelligent Cooling System Built-in fan activates automatically when temperature exceeds 50°C ♥ High Accuracy Performance Provides precise voltage current and power display for professional testing Product Specifications ♥ Product Type Adjustable DC Power Supply ♥ Output Voltage 0–200V 0–300V 0–400V Adjustable ♥ Output Current 0–1A 0–20A Adjustable ♥ Output Power 200W 300W 400W ♥ Working Temperature ≤80%RH ♥ Storage Temperature ≤70%RH ♥ Voltage Stability 0.1% ±3mV ♥ Current Stability 0.2% ±3mA ♥ Ripple Noise Voltage 30mVrms Current 20mArms ♥ Display Type LCD Screen ♥ Display Size 5.3 × 4.8 cm ♥ Voltage Resolution 0.01V ♥ Current Resolution 0.001A ♥ Power Resolution 0.001W ♥ Display Accuracy 0.5% ±2 digits ♥ Memory Function 4 Groups Storage ♥ Cooling System Intelligent Fan Control ♥ Color Options White Black Packing List ♥ DC Power Supply ×1 ♥ Power Cable ×1 ♥ User Manual ×1

• 【High-Precision Digital Control】Features a micro-control system with encoded fine and coarse adjustment knobs, 4-digit LED display (0.01V / 0.001A resolution), keyboard lock, and automatic power calculation for accurate, stable, and easy operation
• 【Memory Storage & Recall Function】Built-in storage and recall buttons allow quick saving and loading of commonly used voltage and current settings. Supports Constant Voltage (CV) and Constant Current (CC) working modes
• 【Compact & Portable Design】Lightweight structure with independent power switch and output control button, suitable for laboratories, schools, electronics repair, DIY projects, and industrial applications
• 【Comprehensive Safety Protection】Equipped with over-current, over-voltage, and short-circuit protection systems to ensure safe and reliable operation during long-term use
• 【Efficient Cooling System】Designed with side ventilation openings and an internal cooling fan to improve heat dissipation, prevent overheating, and extend equipment service life