Useful and high quality regulated power supply DIY kit for experimental use. Easy to install and maintain. Features: High quality regulated power supply whose output voltage is continuously adjustable from 1.25V to 12V. One way adjustable signal generator output, convenient to provide pulse signal for test circuit. With the function of logic pen, it is convenient to test logic level of test circuit. With one way buzzer, it can test the wires on and off and low-frequency signal. Easy to install and maintain. Specifications: Plug Type: EU / US (optional) Input Voltage: 220V(EU) 110V(US) Output Voltage: 1.25V-12V Continuously Adjustable Power: 2W PCB Size: 7.3 * 6.2cm / 2.8 * 2.4in Item Weight: 340g / 12oz Package Size: 15 * 15 * 5cm / 5.9 * 5.9 * 2in Package Weight: 344g / 12.1oz Package List: 1 * Regulated Power Supply Kit