ITEM NAME:Switching Power Supply Regulator Module Board 3.3v 1000ma 1100ma Description: Type AC / DC Power Supply Modulation Control : Chip Transistor : Half-Bridge Connection Material: Plastic Size: 50 * 25 * 15mm Output Power 5 (W) Output Voltage 0-36 (V) Input Voltage 100-240 (V) Efficiency (%) 60-90 Output Noise 20-800 Output Voltage Accuracy Is 0.3 (%) Voltage Regulation 0.1 (%) Package Includes: 1 x 3.3V 1000ma Low Power Supply Module.Output Power 5 (W). Output Noise 20-800. People always bought together with.