Adjustable DC Regulated Power Supply DIY Kit High quality DC regulated power supply whose output voltage is continuously adjustable from 0 to 30V. Including a circuit to limit output current which enables output current to be continuously adjustable from 2mA to 3A. Provide current limiting, LED display, over load and short circuit protection. Easy to install and maintain. Input Voltage: 24V AC Input Current: Max 3A Output Voltage: 0-30V (continuously adjustable) Output Current: 2mA-3A (continuously adjustable) Output Voltage Ripple: Max 0.01% colour:Photo Color Material:plastic size:Assembled Item Size: 9 * 8.5 * 3.5cm / 3.5 * 3.4 * 1.4in Package Contents: 1*Adjustable DC Regulated Power Note: Please install the resistances and diodes according to PCB diagram. Make sure resistance values, diode models and installation direction are correct. Please install other components from small to large, low to high. The picture of testing process is just for reference, pls in kind prevail! Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.