Buy USR-GPRS232-734 RS485 GSM GPRS DTU Modem RS485 to GPRS type only US $58.60.

USR-GPRS232-734 RS485 GSM GPRS DTU Modem RS485 to GPRS type

Price US $58.60 58.60 / 1 piece 0% OFF
Rating 0 of 5.0
Seller USR IOT Store

Returns accepted if product not as described, buyer pays return shipping fee; or keep the product & agree refund with seller.

On-time Delivery: Full Refund if product isn't received in delivery time estimated


Model Number : USR-GPRS232-734
Item Type : Exit Button
Size : 86.0 X82.5 X24.0 mm
Brand Name : NoEnName_Null
Item : RS485 GSM GPRS Modem
Interface : RS485
Input Voltage : DC 5V~36V
RS485 : Electrical Isolation/ESD air 15KV/Surge 4KV (8/20us)
Warranty : 2 years



Product Description



USR-GPRS232-734 is a new GPRS device developed by USR IOT in 2016. Users can realize Serial to Network bidirectional transparent data transmission via simple configuration. And the device supports custom registration package, heart beat package, 2 Socket connection and USR-Cloud.
USR-GPRS232-734 uses DC power supply and terminal power supply, supporting 5.0V~36.0V wide voltage power supply. RS485 circuit uses electrical isolation scheme, which has anti-interference ability. So the device is suitable for strong electromagnetic interference environment such as power industry.





  • 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
  • Support 2 sockets, support TCP and UDP
  • Each connection supports 4KB data cache, can choose data cache to avoid data loss in abnormal connection
  • 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, add more flexibility for application
  • Support sending Chinese/English SMS via simple instructions
  • Support class RFC2217,can modify module serial parameter via network dynamically
  • Support 5~36V wide voltage power supply, using DC power supply and terminal power supply
  • RS485 circuit uses electrical isolation scheme, which has anti-interference ability



Wireless Parameter

Wireless Standard


Frequency Band


Transmitted Power

GSM900 class4(2W)
DCS1800 class1(1W)

GPRS Terminal Device Class

Class B

GPRS Multi-slot Class

GPRS Class 10

GPRS Coding Schemes

CS1 ~ CS4

Antenna Option

SMA interface

Hardware Parameter

Data Interface

RS485 level, 5.08*3 terminals

Baud Rate

2400bps ~921600bps

Working Voltage

DC 5V~36V

Working Current


Operating Temp.


Storage Temp.




RS485 Reliability

Electrical Isolation
ESD air 15KV
Surge 4KV(8/20us)

Software Parameter

Wireless Network Type


Working Mode

Transparent transmission mode
SMS transparent transmission mode
HTTPD mode

Setting Command

AT+Command structure

Network Protocol


Max. TCP Connection


User Configuration

Serial AT command, network AT Command, SMS AT Command


Support custom application software

Software Function



Simple Transparent Transmission mode

Support TCP Client /UDP Client

HTTP protocol transmission


SMS transparent transmission


Heartbeat Package


Class RFC2217


Registration Package Mechanism

Support custom ICCID/IMEI registration package

Others Certificate CE FCC ROHS WEEE



734 structure


Company Information


Jinan USR IOT Technology Limited has been focusing on IOT and M2M field for more than 6 years. We offer networking products

such as serial device server, Ethernet module/server, GPRS DTU, WIFI module and remote relay. We have professional R&D 

teams for hardware and software, phone APP and server. And we can provide OEM & ODM service for clients.Our company has

rich experience in system solutions such as smart home system, intelligence fire, agricultural network,temperature and humidity

acquisition, industrial control, attendance, entrance guard system and remote control



  • Service: 2 years guarantee, and professional technical staff help.
  • Supply ability: We usually have 3000-5000 units in stock for urgent orders.
  • Capacity: 50K/week, can meet the demand of most enterprises application.
  • Lifetime: At least 5 years for each device, can still produce just if you need.
  • Cooperation: Welcome the cooperation with distributors all over the world.
Our Services


Shipping ways

  • Southeast Asia, Mid East and Australia: Egypt, Israel, Pakistan, Turkey, India, Singapore, Thailand, New Zealand ect. We choose  DPEX or ARAMEX. It may take 7-15 days.
  • Russian Federation: we only send orders by EMS or CPAM. It  will take 20-45 days. 
  • South America: Brazil, Chile, Peru, Argentina, Columbia ect. We choose EMS or CPAM for shipping.It will take 20-45 days. If you really need DHL, please contact us.
  • North America and Most of Europe: We choose DHL, except cities that DHL can not reach. It will take 7-10 days.


 Return/refund policy 

  • If you get a defective item and you do not like the item we send to you, Please contact us within 5 days after you receive your order.  item must be returned with its original packaging and accessories.Customer is responsible for shipping charges of returned item.We will refund the money to you when we get the returned item.  Or we can send you a new one according to your demand.
  • if item is lost in the transportation, we will fully refund to you.





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