Features: The output voltages ranges of this kit is 1.25V-12V, the regulated output is continuously adjustable, and the output current is 200mA, which is suitable for supplying power to small circuits. One adjustable signal generator output. It is convenient to provide pulse signal for test circuit. With logics pen function. It is convenient to test the logics level of the circuit With 1 buzzers. Can test wire on (connect wire to the positive signal input end of the power supply, and wire on-buzzers will sound). You can also test the low-frequency signal (input signal from signal input terminals, and the buzzers will rings if there is a signal). Whether it's for educational lab, maker space, or workbenches, this power supply kit provides reliable support for experiments, development, and electronic device testing. Specifications: Component:PCB+Acrylic Plug:EU/US Size:Approx.72x62mm/2.83x2.44inch Package Includes: 1 Set Power Supply Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.