Description: Input voltage 5~40V, output 3.3V 5V Maximum output current 1A DC-DC Step-down converter module 550KHz operating frequency. The efficiency is 76-90%. Quiescent current: about 1.5ma Temperature off, input below voltage protection, BS voltage protection and short circuit protection. 2.54mm pin spacing, Arduiuo UNO MEGA2560 MCU development board environmentally friendly Excluding pin size 18.3mm x 10.2mm x 6.7mm(Small) Weight: about 1.3g(Very light) Note: This is a dc-dc voltage converter module, please note when using: 1 the input voltage must not be greater than the maximum input range2 the output power cannot be greater than the maximum load for a long time3 the input power must be greater than the output power, because the power consumption of the module itself Applications: 3.3V 5V MCU ARM CPU FPGA/CPLD Systems powered by lithium battery 12V 5V to 3.3V Motor 3.3V WIFI module esp8266 CCTVaphoto camera Wireless module: Nrf24l0