ITEM NAME:3A 4 Channels Multiple Switching Power Supply Module 3.3V 5V 12V ADJ Adjust N3A8 3A 4 Channels Multiple Switching Power Supply Module 3.3V 5V 12V ADJ Adjust N3A8 3.3V output: Input 4.5-30V, Output 3.3V (Â ±3%) 5V output : Input 6.5-30V, Output 5V (Â ±3%) 12V output : Input 13.5-30V, Output 12V (Â ±3%) AJD output : Input 4.5-30V, Adjustable Output 2-28V Maximum output current per channel : 3A; Overall maximum load power: 50 watts Working frequency 150KHz. Input reverse connection protection Built in thermal shutdown function,Built in current limit function,Built in second current limit function Operating Temperature :-40Â °C to +85Â °C Storage Temperature : -65Â °C to +150Â °C This is a DC-DC voltage converter module,Must be noted when using: 1 Input voltage can not be greater than the maximum input range 2 Output power can not be greater than the maximum load for a long time 3 Input power must be greater than the output power, because the power consumption of the module itself size:88x55x15mm Material:plastic colour:green Package Contents: 1 * DD31AJQA 3A 4-channels DC DC Step-Down Buck Converter Module.Maximum output current per channel : 3A;. 1 DD31AJQA 3A 4-channels DC DC Step-Down Buck Converter Module. 5V output : Input 6.5-30V, Output 5V (Â ±3%). 12V output : Input 13.5-30V, Output 12V (Â ±3%). 3 Input power must be greater than the output power, because the power consumption of the module itself.