Feature:1. Output Protection: With output protection, there is a self recovery fuse on the board for short circuit protection.2. Convenient Operation: The output interface adopts sound wiring clip, which is very convenient for wiring test.3. Non Polarity Input: The LM317 adjustable regulated power supply kit has a rectifier circuit input and can be input without polarity.4. AC DC Input: AC and DC input, the board is equipped with a new 2200UF large capacity filter capacitor.5. High Quality Materials: Made of high quality ABS material, this adjustable regulated power supply kit is strong, durable and has a long service life.Specification:Item Type: Adjustable Regulated Power Supply KitMaterial: ABSBoard Size: Approx. 60 x 33mm / 2.4 x 1.3inDC Input: 5 to 35V AC Input: 6 to 25VOutput Voltage: 1.25 to 30V DCMaximum Output Current: 1AMinimum Voltage Difference Between Input and Output: 3V (Input Voltage Must Be at Least Greater Than Output Voltage 3V60x33).Package List:1 xAdjustable Regulated Power Supply KitNote:AC and DC input, the board is equipped with a new 2200UF large capacity filter capacitor