Features 1??Support dialing surf internet/phone call/short message/TCP/UDP/DTMF/HTTP/FTP other function. 2??Support for GPS/BeiDou/Glonass/LBS base station positioning. 3??Onboard USB interface, can used to test AT order, obtain GPS positioning information, etc. 4??Onboard CP2102USB to UART chip, convenient for serial port debugging. 5??Lead to module for UART and other control interface, convenient access for STM32 and other main control panel. 6??Onboard SIM card slot, support 1.8V and 3VSIM card. Onboard storage card slot, can used to store files, SMS and other data. 7??Onboard audio interface and audio decoding chip, can used for telephone and other voice operation. Onboard 2 LED indicator light, convenient to view running status of module. 8??Onboard level switching circuit, can through wire jumper switching 3.3V/5V operation level. Support baud rate range??300bps~4Mbps??default of 115200bps?? 9??Support automatic identification baud rate(9600bps~115200bps). Support AT order control(base on 3GPPTS 27.007??27.005 and V.25TER order set). Support SIM application tool kit: SAT Grade 3??GSM11.14Release99??USAT. Specification Condition: Item Type: Module Material: Printed Circuit Board Color: As Pictures Shown LTE Cat-1/3G/2G Parameter LTE Cat-1: LTE-TDD:B38/B40/B41, LTE-FDD:B1/B3/B5/B7/B8/B20 3G: UMTS/HSPA+:B1/B5/B8 2G: GSM/GPRS/EDGE:900/1800 MHz GNSS Parameter Receiving: 16 Channel, C/A Coding Sensitivity: -159 dBm??GPS??/-158 dBm??GLONASS??/-159dBm??BeiDou??, Cold Start??-148dBm First Positioning Time(Open Ground): Cold Start??