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USR-GPRS232-7S3

Product catalog summary

Dimensions
Unit: mm
The device features a pin-type footprint for easy integration and supports configuration via computer setup software, serial AT commands, or SMS AT commands. It allows transparent transmission, replacing data transfer radios without altering the original system. It supports network connections in up to 4 channels, enabling data transmission from the serial port to different servers, and supports both public and APN network access. The device maintains server connections with heartbeat and Always Online modes and offers a virtual serial port with free software available.

Overview
The USR-GPRS232-7S3 is an embedded wireless terminal equipment designed for PCB integration to transmit data through GPRS/GSM networks. It facilitates two-way data transparent transmission between COM and GPRS/GSM networks using a SIM card. The module includes a built-in SIM card slot and uses a single module with an embedded TCP/IP protocol stack, ensuring higher stability without an external CPU.

Main Features
The device supports KEEP-ALIVE to maintain connections without heartbeat packets. It features a standard GSM/GPRS port with speeds ranging from 14.4 Kbps to 57.6 Kbps and a TTL interface standard. It operates on frequencies of 850/900/1800/1900MHz with data bits of 7 or 8 and stop bits of 1 or 2. The GPRS multi-slot class is Class 10, and the device class is Class B, with coding schemes CS1 to CS4. The baud rate ranges from 2400 bps to 921600 bps. It supports GSM900 class4 (2W) and DCS1800 class1 (1W) with a send/receive capacity of 4K Bytes. The device uses the GSM standard AT instruction set and USR extension AT instruction set, with data and SMS transmission channels. Network protocols supported include TCP, UDP, DNS, and Httpd client, with an IPEX antenna interface and a SIM card interface of 1.8V/3V.

Specifications
The device's size is 45 x 32 x 14 mm, including pins. It operates at temperatures from -25 to 85°C and can be stored at -40 to 125°C with 5 to 95% RH (no condensation). The input voltage ranges from 3.4 to 4.2V for VCC and 5 to 16V for VDD. The average working current is 35 to 48mA at 12V, with a maximum of 394mA at 12V. The device includes a speech interface with MIC input and SPEAK output, and supports virtual serial software. The serial buffer and network buffer both have a send/receive capacity of 4K Bytes. The device is covered by a 2-year warranty and is supported by Jinan USR IOT Technology Limited.

Catalog excerpts

Embedded Serial Device Server Model: USR-GPRS232-7S3 ■ ■ ■ Overview-------------------------------------------------------------------------------------------------------------------------------------------------USR-GPRS232-7S3 is a wireless terminal equipment which can be embedded in your pcb design to transmit tada through GPRS / GSM network. The DTU module can realize two-way data transparent transmission between COM and GPRS / GSM network by using a SIM card. ■ ■ ■ Main Features------------------------------------------------------------------------------------------------------------------------------------------◆ Build-in SIM card slot ◆ Use single module, embedded TCP / IP Protocol stack, without external CPU, Higher stability ◆ Support public and APN network access ◆ Support heartbeat, Always Online mode, can keep connection with server ◆ Support KEEP-ALIVE, to maintain connection if there is no heartbeat packet ◆ Support network connection in Max 4 Channel, can send data from serial port to different servers ◆ Transparent transmission, can take place of data transfer radio, don't need to change your original system ◆ Pin type footprint, convenient for integration ◆ Support configure by Computer set-up software / Serial AT Command / SMS AT Command ◆ Support virtual serial port, FREE software is available ■ ■ ■ Dimensions--------------------------------------------------------------------------------------------------------------------

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Basic Parameter Working Current Speed 14.4 Kbps ~ 57.6 Kbps GPRS Multi-slot Class GPRS Class 10 GPRS Device Class Class B GPRS Coding Schemes CS1 ~ CS4 GSM900 class4 (2W) Max Launch Power DCS1800 class1 (1W) GSM standard AT instruction set USR extension AT instruction set Application Data transmission SMS transmission Network Protocol TCP, UDP, DNS, Httpd client Network Link Count 2 Disconnection Buffer 2 x 4K Bytes Send: 4K Bytes Network Buffer Receive: 4K Bytes -40 ~ 125° C Storage Condition 5 ~ 95% RH (no condensation) Jinan USR IOT Technology Limited Tel: 86-531-88826739 Email: [email protected]...

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