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Emaar Impex Private Limited
Emaar Impex Private Limited


Serial M2M

Providing you the best range of rs485 gsm modems, gprs modem (usr-gprs232-730 ), low power gsm gprs module, industrial 4g wireless router, wireless module usr lte 7s4 and wireless router with effective & timely delivery.

RS485 GSM Modems

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RS485 GSM Modems
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Product Details:
Connectivity TypeWireless or Wi-Fi
Wireless StandardGSM/GPRS/EDGE
Standard Frequency Band850/900/1800/1900MHz
GPRS Terminal Device ClassClass B
AntennaSMA interface
Working ModeTransparent transmission mode, SMS transparent transmission mode and HTTPD mode
Setting CommandAT+ Command structure
Network ProtocolTCP/UDP/DNS/HTTP

USR-GPRS232-734 is a new GPRS device developed by USR IOT in 2016. Maturation software functions, covering mostly conventional application scenarios. Users can realize Serial to Network bidirectional transparent data transmission via simple configuration. Supporting custom registration package, heart beat package. Supporting 2 Socket Connection, and USR cloud join in.

USR-GPRS232-734 use DC power supply and terminal power supply, supporting 5.0V~36.0V wide voltage power supply. RS485 circuit using electrical isolation scheme, has anti-interference ability, suitable for strong electromagnetic interference environment, such as utility industry.

Features
  • Support:GSM850/900,DCS1800/1900¿¿¿able to be used around the world
  • Support GSM/GPRS/EDGE and 2G/3G/4G card, but don’t support 3G/4G network
  • Each connection support 4KB data cache, when in abnormal connection choosing data cache to avoid data lost
  • Support sending registration package and heartbeat package data
  • Support remote configuration via SMS
  • Support multi work modes: SMS transmission mode, network transmission mode and HTTPD mode
  • Support basic instruction set and extension instruction set
  • Support establishing, maintaining and closing network connection by using extension instruction set, more flexibility in application
  • Support sending Chinese/English SMS via simple instructions, avoiding PDU sending Chinese SMS which complex and hard use
  • Support class RFC2217,can modify module serial parameter via network dynamically
  • Support wide voltage 5~36V power supply, using DC power supply and terminal power supply
  • RS485 circuit using electrical isolation scheme, has anti-interference ability
Application Field
  • Power industry: power remote meter reading, substation monitoring, power line monitoring
  • Municipal industry: street lamp remote monitoring management, pipe network remote monitoring, urban energy consumption monitoring
  • Oil industry: remote monitoring of oil-gas well, GPRS remote oilfield automation detection monitoring system, Gas pipe network monitoring system solutions
  • Environmental protection industry: pollution sources monitoring, atmospheric environment monitoring, noise monitoring, dust monitoring
  • Agricultural application: greenhouse remote monitoring and management, aquaculture monitoring management, agricultural water pump monitoring management
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GPRS Modem (USR-GPRS232-730 )

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GPRS Modem (USR-GPRS232-730 )
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Product Details:
StandardGSM / GPRS
Rate14.4 Kbps ~ 57.6 Kbps
Standard Frequency Range850/900/1800/1900MHz
Interface StandardRS-232 DB9 cellular type, RS-485 2 wire (A+, B-)
Check BitNone, Even, Odd
Sim Card1.8V / 3V
Size80x 84 x 25
CurrentAverage 22 ~ 45mA, Max 201mA

USR-GPRS232-730 GSM Modem / GPRS DTU (Data Transfer Unit) is a wireless terminal equipment which can convert serial data to IP data or convert IP data to serial data through gprs /GSM network. 730 is based on USR-GM3. Clients can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.

Features of RS232 / RS485 GSM Modem
  •  RS232 or RS485 interface, can’t be used at one time
  • 2G Frequency: GSM850/900,DCS1800/1900, 2G GSM/GPRS
  • Work Mode: TCP and UDP Client
  • Supports register packet and heartbeat packet
  • Can be remote configurated via SMS
  • Support multi work modes : SMS transmission mode,network transmission mode and HTTPD mode
  • Support basic instruction set and extension instruction set
  • Hardware flow control RTS/CTS
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Low Power GSM GPRS Module

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Low Power GSM GPRS Module
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Product Details:
ApplicationGSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transm
Rate14.4 Kbps ~ 57.6 Kbps
Standard Frequency Band850/900/1800/1900MHz
Sim Card1.8V / 3V
Speech interface1 channel MIC input, 1 channel SPEAK output

The Low Power Gsm Modules, used for data transparent transmission. USR-GM3 is highly-integrated UART to GSM/GPRS module. Users can easily make communication with it among serial device, cellphone and network device. USR-GM3 is an embedded GSM module. It is designed for embedded system, and it is so small and convenient that you can integrate it to your system easily.

Features of Low Power Gsm Modules
  • Small and completed function GPRS DTU, transmission between serial and GPRS
  • Support GSM850/900,DCS1800/1900
  • Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network
  • Support 2 sockets, Support TCP and UDP
  • 4KB cache for each of sockets, user can choose to cache data or not
  • Support register packet and heartbeat packet
  • Support setting parameters via SMS message
  • Support 3 work modes: SMS transmission mode, network transmission mode and HTTPD mode
  • Support basic and extend AT command sets
  • Support class RFC2217, can dynamically modify serial parameter of module via network
  • Support flow control: RTS/CTS
  • Support RS485
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Industrial 4G wireless router

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Industrial 4G wireless router
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Product Details:
Warranty (month)12
Wireless4G
Working Temp-20~60C
Power Supply 5-30V

USR-G800-42 is a 4G wireless router, which provides a solution for user’s device to access 4G network.USR-G800-42 is based on industrial high-performance embedded structure.
It plays an important role in data transmission fields such as smart home,smart grid,personal healthcare and industrial control. USR-G800-42 has one WAN port and four LAN ports,
and it support data transparent transmission between RS232 and 4g network.

¿¿¿ 4 LAN ports and 1 WAN port
¿¿¿ Support WiFi network
¿¿¿ Support 4G module with Mini-PCIE interface
¿¿¿ Multiple indicator lights
¿¿¿ Data transparent transmission between RS232 and 4G
network
¿¿¿ Support Web setting
¿¿¿ A key to restore factory settings
¿¿¿ Both LAN port and WAN port with a rate of 10/100Mbps

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Wireless Module USR LTE 7S4

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Wireless Module USR LTE 7S4
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Product Details:
ModelUSR LTE 7S4
Power SupplyDC 5-36V
Wireless4G

4G Module USR-LTE-7S4 is used to transmit data between serial port and network server by operator
network. It is configured by AT Command and work in dual transparent transmission mode.
USR-LTE-7S4 is in small size, which is used in LTE, WCDMA, TD-SCDMA. It works in transparent
transmission mode and more functional software with high speed and less time delay, supports FTP protocol.
USR-LTE-7S4 is compatible with 2G module 7S2/7S3, user can replace 7S3 easily. 
function in firmware to ensure the stability if work for a long time.

Function Feature
 Supports TDD-LTE(38,39,40,41), FDD-LTE(1,3), WCDMA(1,8), TD-SCDMA(34,39), GSM(3,8).
 Based on embedded Linux system, in high stability.
 Support RNDIS Remote Network Driver Interface (USB interface).
 4 Line network connections at same time (TCP and UDP).
 10KB Serial data buffer each link prevent data-losing.
 Identity package and Heartbeat package.
 Support configuring the parameters via SMS.
 Work mode: Transparent mode and HTTPD client mode.
 Configured with AT Command Set.
 Socket distribution protocol, can send data to different sockets.
 upgrade firmware for your MCU with FTP.
 upgrade firmware for your 7S4 with FTP.
 Send message by AT Command.
 Synchronous and adaptive Serial port baud rate.
 Its pins are compatible with 2G module 7S2/7S3, Simple replacement.

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Wireless Router

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Wireless Router
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Product Details:
Working Current 120mA
Work Temp20~70 Deg C
Wireless4G

4G DTU USR-G780 is used to transmit data between serial port and network server by operator network. It is configured by AT Command and work in dual transparent transmission mode.
USR-G780 is used in LTE, WCDMA, TD-SCDMA. It works in transparent transmission mode and more functional software with high speed and less time delay, supports FTP protocol.
We add Watchdog timer (a automatic reboot trigger) to ensure the stability if work for a long time.

Functions & Features

¿¿¿ Supports TDD-LTE(38,39,40,41), FDD-LTE(1,3), WCDMA(1,8), TD-SCDMA(34,39), GSM(3,8)
¿¿¿ Based on embedded Linux system, in high stability
¿¿¿ Support RNDIS Remote Network Driver Interface (USB interface)
¿¿¿ 4 Line network connections at same time (TCP and UDP)
¿¿¿ 10KB Serial data buffer each link prevent data-losing
¿¿¿ Identity package and Heartbeat package
¿¿¿ Support configuring the parameters via SMS
¿¿¿ Work mode: Transparent mode and HTTPD client mode
¿¿¿ Configured with AT Command Set
¿¿¿ Socket distribution protocol, can send data to different sockets
¿¿¿ upgrade firmware for your G780 with FTP
¿¿¿ Send message by AT Command
¿¿¿ Synchronous and adaptive Serial port baud rate

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4G wireless module Frequency Band

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4G wireless module Frequency Band
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Product Details:
Supply Voltage5V~35V
Dimension20mm x 30mm x8mm
Working Humidity-40-85 Deg C

USR-G402tf-mPCIe is a 4G wireless module with mPCIe hardware interface. The module can provide users with high speed wireless data and internet access services. And The module has voice function, SMS function, data transmission function and phone book function. Moreover, the module can
work on devices of Windows, Linux and Android.

¿¿¿ Support 2G, 3G and 4G network
¿¿¿ mPCIe hardware interface
¿¿¿ Support AT command set
¿¿¿ Support voice function
¿¿¿ Support SMS function
¿¿¿ Support data transmission function
¿¿¿ Support function of phone book
¿¿¿ Support USB communication
¿¿¿ Can work on devices of Windows,Linux and Android

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4g Wireless Module With LCC Hardware Interface

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4g Wireless Module With LCC Hardware Interface
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Product Details:
Size86 X 81 X 24 mm
Network ProtocolIPV4, TCP/UDP
Working Voltage36 V

USR-G402tf-LCC is a 4G wireless module with LCC hardware interface. The module can provide users with high speed wireless data and internet access services. And The module has voice function, SMS function, data transmission function and phone book function. Moreover, the module can work on
devices of Windows, Linux and Android.

■ Support 2G, 3G and 4G network
■ LCC hardware interface
■ Support AT command set
■ Support voice function
■ Support SMS function
■ Support data transmission function
■ Support function of phone book
■ Support USB communication
■ Can work on devices of Windows,Linux and Android

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Industrial Wireless 4G Routers

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Industrial Wireless 4G Routers
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Product Details:
Wireless4G
WAN Ports1
LAN Ports4

USR-G800-43 is a global universal frequency 4G wireless router, which provides a solution for user’s device to access 4G network. USR-G800-43 is based on industrial high-performance embedded structure. It plays an important role in data transmission fields such as smart home, smart grid, personal healthcare and industrial control. USR-G800-43 has one WAN port and four LAN ports, and it supports data transparent transmission between RS232 and 4G network.

Features of Industrial 4G Routers

  • 4 LAN ports and 1 WAN port
  • Support WiFi network
  • Support 4G module with Mini-PCIE interface (TD-LTE: Band 38/39/40/41, FDD-LTE: Band 1/3, WCDMA: Band 1/8, TD-SCDMA: Band 34/39, CDMA2000 1x/EVDO: Band BC0, GSM/GPRS/EDGE: Band 3/8 )
  • Multiple indicator lights
  • Data transparent transmission between RS232 and 4G network
  • Support Web setting
  • A key to restore factory settings
  • Both LAN port and WAN port with a rate of 10/100Mbps
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RS232 Converter

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RS232 Converter
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Product Details:
Working Voltage30 V
Network ProtocolIPV6
Working Temp-20~60 Deg C

USR-G761 is a DTU can used in 3G WCDMA network, it can worked in WCDMA/GSM, support HSDPA(7.2Mbps) high speed downlink transmission, and HSUPA(5.6Mbps) high speed uplink. The leistungskern of G761W is “transparent transmission”, user can integrate it into their system easily to realise data transfer based on WCDMA network.

Features
  • Support quad band GSM/GPRS/EDGE and triple band WCDMA/HSPA.
  • Support 2 network connections online simultaneously, support TCP and UDP.
  • Support send network registration packet.
  • Support heartbeat packet to serial or network.
  • Support set the parameter remotely by SMS
  • Support multiple working mode: SMS transparent transmission, network transparent transmission, HTTPD mode.
  • Support send Chinese/Enlish SMS by AT command.
  • Support RFC2217 function, the parameters of interface can be revised.
  • Support RS232/RS485(can not work at the same time).
Working Mode

1. Network transparent transmission mode

In this mode, User’s device can send data to specified server by WCDMA network. G761 support 2 socket link, that is Socket A and Socket B, two links is mutual independence.

2. HTTPD Client Mode

In this mode, the data will sent to HTTP server directly, or obtain data from HTTP server. The data will sent to Web server(apache, IIS, tomcat, etc) in Http(GET/POST) mode as long as sending data in formal format. User can utilize the scripting language like PHP, ASP as database storage.

3. SMS transparent transmission mode

In this mode, user’s device can send SMS to specified phone, or transmit the SMS from phone to device. The transparent transmission between device and phone can realised by parameter setting.

4. AT command

When G761W working in any kind of mode(Network transparent transmission, SMS transparent transmission, AT command), user can send specified data, then let WCDMA switch into AT command mode.

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GPRS2327S3 Gsm Modules

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GPRS2327S3 Gsm Modules
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Product Details:
ModelGPRS2327S3
Size80 x 80x22mm
Speed10BaseT, 100BaseTx

Product description:

  • Support GSM850/900, DCS1800/1900
  • Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network
  • Support 2 sockets, Support TCP and UDP
  • 4KB cache for each of sockets, the user can choose to cache data or not
  • Support register packet and heartbeat packet
  • Support setting parameters via SMS message
  • Support multi work modes: SMS transmission mode, network transmission mode and HTTPD mode
  • Support basic and extend AT command sets
  • Support class RFC2217 can dynamically modify the serial parameter of a module via a network
  • Support flow control: RTS/CTS
A Low-Cost Gsm Modules, used for data transparent transmission. USR-GPRS232-7S3 is highly-integrated UART to GSM/GPRS module. Users can easily make communication with it among serial device, cell phone, and the network device. USR-GPRS232-7S3 is based on USR-GM3 GPRS module. Clients can use the product to realize bidirectional transparent transmission from the serial port to the network through simple AT command.
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Industrial 4G LTE Modem

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Industrial 4G LTE Modem
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Product Details:
CertificationCE FCC ROHS
Size 86*81*24
Srrial portRS232/RS485

4G LTE Modem – USR-G781 is a 4G/3G Router and Serial Data Transmit Unit. USR-G781 provide a serial to cellular networking solution. Industrial Ethernet device or serial device can use G781 to access the internet database.
List of LTE networks:

                                               Operation Band
        Network TypeG781 (Asia )G781-E (Europe )G781-AU ( Australia )G781-A ( USA )G781-V ( USA )
4GFDD-LTE1/31/3/5/7/8/201/2/3/4/5/6/7/8/282/4/124/13
TDD-LTE38/39/40/4138/39/40/4140
3GWCDMA/HSPA/UMTS1/81/81/2/5/82/4/5
2GGPRS/GSM/EDGE3/83/82/3/5/8
Features of Industrial 4G LTE Modem, Serial to Cellular Modem
      • Support American version, European version and Austrian version.
      • 2 RJ45 port, one can be WAN or LAN port and another one can be LAN port.
      • Support VPN(PPTP) client.
      • Support static routing
      • Support Firewall and QoS
      • Support DDNS
      • Support NTP to check the time.
      • Support TCP/UDP client mode and server mode.
      • Support identity packet and heartbeat packet.
      • Support Serial to HTTP format
      • Support upgrading firmware via FTP.
      • Integrated Hardware and software watchdog timer.
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Wireless 4G LTE Router

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Wireless 4G LTE Router
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Product Details:
Wirless4G
Working Temp-20~60 Deg C

We are offering Wireless 4G LTE Router to our clients.
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Emaar Impex Private Limited
Kalpesh Jain (Director)
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Mumbai - 400004, Maharashtra, India
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