Description: Over-load protection, over-heating protection and short circuit protection. Isolation built-in constant voltage power supply module. Small size, high efficiency, full load aging test and ultra low output ripple. With case shell, more safety and beautiful Perfect for electronic hobby project, wide application, you can use it on radio, car audio, LED display, motor, cell phone, etc. Specification: - Input voltage: AC 85-265V - Output power: 3W - Output Voltage: DC 12V - Current output: 450mA - Working efficieny: 60-90% - Output voltage accuracy: 3% - Voltage adjustment rate: 30% - Load regulation: 30% - Working frequency: 50-60HZ - Operating temperature: -20~+80℃ - Modulation Mode: PWM - Connection mode: half bridge - Material: Plastic + electronic components - Color: White - Size: approx. 4.0 x 2.8 x 2.3cm Package Includes: 1 Piece AC-DC Switching Power Supply Module Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !