Input voltage: 5~23V, output 5VLong-term large output current: 1.3A (5V to 3.3V)Short-term large output current: 2A (5V to 3.3V)The operating frequency of the DC-DC step-down converter module: 1.4MHz. Efficiency: 78-91%.2.54mm pin pitch. Not including pin size: 22.5mm x 13.5mm x 6.5mmApplication range:for MCU development board, FPGA / CPLD DUE 8051 AVR C8051, etc.5V LED lighting5V motorWIFI esp8266 moduleWireless module: Nrf24l01 CC1101 CC2500 CC2530Smart home/home automation315M 433M wireless remote controlDistributed chargerPre-regulator for linear regulatorDSL modemType: 5-23V to 5VColour: GreenMaterial: PCBPackage Contents:5 x Buck Power ModuleNotice:This is a DC- converter module, you must pay attention to:1. The input voltage cannot be the large input2. The output power cannot be the large load for a long time3. Due to the power consumption of the module itself, the input power must be the output powerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.