One Introduction to UNVSIM868 Development Board The UNVSIM868 development board adopts a module launched by SIMCOM company which has superior performance and compact size Onboard MICRO SIM card holder with reserved headphone microphone soldering interface The antenna interface is IPEXMINI interface which is small in size and easy to connect various antennas Onboard highefficiency DCDC power module supporting 5V18V wide voltage power supply with reserved power enable port for easy control of power supply and reducing development board power consumption The main serial port has been level matched and supports 33V 5V microcontrollers or other control systems GSM nbsp GPRS GPSBeidou function brbrII Module supported data 1 Supports GPS BD GLO LBS base station positioning 2 Equipped with RTC backup battery supports hot start and warm start greatly enhancing positioning speed 3 Supports GPS independent serial port acquisition and configuration of positioning data with more options and convenience 4 The positioning data also supports GSM serial port which can be obtained and configured through AT commands making it faster and simpler 5 Computer debugging videos are making a strong push allowing users to master 868 functions faster 6 Various microcontroller programs have been added greatly facilitating the rapid development of microcontrollers Module advantages 1 Rich interfaces unified planning of commonly used interfaces and integrated headphone interface which can be led out in a pin arrangement to save space 2 Our power supply has enable control pins that can control the power supply