DIY Kits LM317 Adjustable Voltage Regulator AC-DC 110V to 12V Step Down Power Converter Transformer Supply Module US Plug Case

Features: One way adjustable signal generator output. Convenient to provide the pulse signal With a logical pen function. For convenient the logic level of test circuit With one way buzzer. You can test the wires on and off (connect the wires to the power positive and signal input, the wire on - the buzzer sound). You can also test the low-frequency signal (input the signal from the signal input, if there is a signal, the buzzer sound) Specifications: Power: 2W Voltage: 110V Plug: US plug Output voltage: 1.25V - 12V regulated output continuously adjustable. PCB board size: 7.3 x 6.8cm (W / L) Shell Size: 12 X 7 X 4.8cm (L / W / H) Weight: about 295g Notes: This item is unassembled Package Included: 1 x DIY LM317 Kit