DualSIM 

4G LTE/3G/2G/GNSS/GPS Modem (UART/USB)

This is a Dual-SIM 4G LTE UART/USB MODEM based on SIM7600EI, which is professionally designed with 4 layer Gold plated PCB having industrial grade protections. It is built with Multi-Band 4G LTE module, SIM7600EI from SIMCOM. As its name implies, it is built with two nano SIM sockets to support Dual SIM (DSSS) Functionalities , one at top side and other at bottom side of the PCB, but both are aligned vertically so as to match the proposed slot on enclosure for easy access. By default the board is populated with Push-Push Nano SIM socket, which can be replaced with normal Push-Pull type SIM Socket as well, on special request.  Dual SIM Card feature will help us to switch to the other network provider (SIM2), incase of unavailability of first network provider by AT Commands,without opening the enclosure or turning off the Power.

This MODEM is built with support for 4G LTE/3G/2G GSM networks, will automatically rollback to 3G mode in the absence of 4G Network and to 2G mode in the absence of 3G Network, which will enable you to use it across the entire country including remote villages where 4G/3G towers are less populated . Since this modem supports GNSS, customer can make use of Geo-Location identification using either GPS,GLONASS or BD Satellite networks. This MODEM supports UART communication ( 3V3 & 5V microcontrollers) as well as USB interface with USB Power option. Industrial grade Protections are provided for Noise,Spikes, Anti Static voltages & Surges coming through Power supply, USB, Antenna UFL Connections and through SIM Sockets. 

The Modem is populated with high quality Gold plated U.FL Connectors for 4G Main antenna, Auxilery (Diversity) Antenna & GPS Antenna. Option has been provided to select either Patch antenna or External Active antenna for GPS. Highly stable power supply has been provided for external GPS Active antenna having LNA. All this antenna networks are carefully designed with RF PCB design layouts and proper impedance matching networks for ensuring maximum signal gain and RF power delivery. 

This modem is built with Low dropout Linear Voltage Regulator having current capacity of 3Ampere to deliver enough current on demand, which will help modem to works properly on low signal range environments. Due to populated LDO regulator, Modem can be powered by DC voltage ranges from 5V DC to 12V DC. It is built with option to select interfacing voltage level (logic level voltage) based on user host controller, which allows you to connect 3V3 or 5V Microcontroller without any extra level conversion IC. In order to attain High Speed data communication between Modem and External Microcontroller, the board is built with TXB0108 voltage level translator IC, instead of low cost Resistive devider or reverse biased diodes/Mosfet.

Apart from the Power & UART Communications, most of the important Status, Control and LED pins are made available at on board 2mm pitch RMC Connectors for advanced users. The RMC connectors are separated based on its function and usability. For simple application ,user can make use of just two RMC connectors like Power, UART and leave all other RMC connector pins as open. Advanced users can make use of other RMC connectors for getting more functions.

C-Type USB Connector is provided for USB interface as well as for powering the MODEM, which are protected by onboard TVS IC. Even though the MODEM allows powering via USB from LAPTOP, we do not recommend it as the current available from LAPTOP USB ports are limited and may not be sufficient to support the modem on extreme demand conditions like out of range areas. Connectors like SIM socket,USB ports and Antenna Connectors are protected from Anti Static High Voltages using ESD protection ICs. 3 Nos onboard LEDs are provided to know the modem status like Power, Status and Net. Most of the required I/O pins are made available at Berg strip Headers (connector not populated). Most of the serial port status and control pins are also made available on separate RMC Connectors.

In order to reduce power consumption, Modem power ON/OFF options are provided on RMC connector. User can completely Turn ON/OFF the modem power supply using this pin from an external microcontroller GPIO Pins. Apart from this, PKEY pins are also made out of connector to Start and Stop the modem externally. In order to reduce the GPIO pins required to control the modem, by default the modem is configured to start automatically once it is powered and if needed this can be controlled manually through PKEY pins available on RMC connector.

The SIM7600EI has strong extension capability with rich interfaces including UART, USB2.0 GPIO etc. With abundant application capability like TCP/IP/IPV4/IPV6/Multi-PDP/FTP/FTPS/HTTP/HTTPS/DNS, the module provides much flexibility and ease of integration for customer's application.The SIM7600E Modem is having internal TCP/IP stack to enable you to connect with internet via 4G LTE/3G/2G/GPRS. It is suitable for Tracking, SMS, Voice as well as DATA transfer application in M2M interface and vehicle tracking applications. 

• Support DUAL SIM (DSSS) 
• Modem Support UART and USB Communication 
• High quality professionally designed Industrial Grade Modem(Made in INDIA)
• 4 Layer Gold Plated PCB for industrial grade performance.
• Built with SIM7600EI Module from SIMCOM
• Works with 4G LTE/ 3G / 2G GSM GPRS Networks
• Automatic Fallback to 3G incase of absence of 4G Network and to 2G incase of absence of 3G Network 
• Support GNSS / GPS 
• Built in GNSS Geo Location Detection,Protocol: NMEA 0183
• Internet Protocol:TCP/IP/IPV4/IPV6/Multi-PDP/FTP/HTTP/DNS
• Support RNDIS/PPP/ECM ,MQTT/MQTTS ,TLS1.2 ,LBS ,TTS* WIFI Scan
• Firmware update via USB/FOTA* 
• SIM7600EI support VoLTE to work with Jio sim
• Onboard 3Nos UFL connector for External 4G LTE Main antenna,  Diversity Antenna and GNSS/GPS antenna
• Option to Connect Patch antenna or active antenna for GNSS / GPS
• Onboard 3V3 Voltage regulator for GNSS / GPS external active antenna
• Onboard C-Type USB Connector for USB Communication, Modem Power and module firmware updating
• Dual Nano SIM Card Connector (Push-Push Type) ,one on top  and other on bottom of the PCB for easy access.
• Built with microSD card connector on top of the PCB for easy access.
• All important Status , Control and Communication pins are made available at different RMC connectors.
• Option to Turn ON/OFF Modem Power using Host Microcontroller GPIO pins.
• Option to automatically Turn ON Power and Start the modem on powering.
• LM39302 linear LDO voltage regulator is used for providing high-current output.
• Onboard TXB0108 voltage level translator IC which helps to interface with 3V3 & 5V External MicroControllers
• Onboard LED for power indication, Network and status.
• Header option for interfacing ADC,I2c,SPI
• Populated with Transient Voltage Suppressor and Anti Static Protection ICs 
• 4 Nos of 3mm Mounting Holes are Provided 
• Input voltage : 5V-12V DC / 2Amp
• Working temperature:-40°C ~85°C

• 1 x Dual-SIM 4G LTE / 3G / 2G / GPRS / GNSS /GPS / UART / USB Modem Board (SIM7600EI) 
• 1 x 2 pin RMC connector
• 1 x 4 pin RMC connector
• 1 x 5 pin RMC connector
• 1 x 6 pin RMC connector

Note:  Antennas are not included in this items, if needed , please select Antennas and UFL-SMA cables from optional items listed above.

• Dual-SIM 4G LTE SIM7600EI wiki (Coming Soon)
• Datasheet SIM7600EI
• SIM7600EI AT command
• SIM7600EI Audio application note
• SIM7600EI Hardware design