
GPRS Module in Automatic Meter Reading System for Wireless Data Collecting RS232
Introduction of RS232 / RS485 GSM Modems
This is a RS232/RS485 to gprs dtu, used for data transparent transmission. GPRS232-730 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 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 Modems
Support RS232/RS485 interface, choose before purchase;
Support GSM850/900,DCS1800/1900
Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network
Support TCP and UDP
Support register packet and heartbeat packet
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 class RFC2217, can dynamically modify serial parameter of module via network
Support hardware flow control RTS/CTS
Function Structure of Low Power Gsm Modules
Application Field of RS232 / RS485 GSM Modems
1.Application in public server
2.Use network to extend serial communication distance
3. Server transit mode
Parameter
Network | |
Standard | GSM / GPRS |
Rate | 14.4 Kbps ~ 57.6 Kbps |
Standard Frequency Range | 850/900/1800/1900MHz |
GPRS Multi-slot Class | GPRS Class 10 |
GPRS Terminal Device Class | Class B |
GPRS Coding Schemes | CS1 ~ CS4 |
Max Launch Power | GSM900 class4 (2W), DCS1800 class1(1W) |
Application | GSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission |
Network Protocol | TCP, UDP, DNS, Http |
Network Link Count | 4 |
Disconnection Buffer | 4 x 15K bytes |
Network Receive Buffer | 4K byte |
Serial | |
Port Number | 2 (1*RS-232, 1*RS-485, can not work at the same time) |
Interface Standard | RS-232: DB9 cellular type, RS-485: 2 wire (A+, B-) |
Data Bit | 5, 6, 7, 8 |
Stop Bit | 1, 1.5, 2 |
Check Bit | None, Even, Odd |
Baud Rate | UART: 2400 bps ~ 921600 bps |
Flow Control | RTS/CTS |
Receive Buffer | 4K byte |
RS-485 Pull-up and Pull-down Resistor | 2.2 KΩ |
Device Interface | |
Antenna Interface | 50Ω/SMA-K (female terminal) |
SIM Card | 1.8V / 3V |
Speech Interface | Null |
Software | |
Virtual Serial(USR-VCOM) | Windows 2000 or higher (32 bit/64 bit) |
Configuration | Serial AT command, network AT command, SMS AT command |
Basic Parameter | |
Size | 80x 84 x 25(mm) |
Operating Temp. | -25 ~ 85°C |
Storage Temp. | -40 ~ 125°C |
Input Voltage | DC 9 ~ 24 V |
Working Current | Average: 22 ~ 45mA, Max: 201mA |
More | |
Warranty | 2 years |
Accessory | 12V1A power, serial line, GPRS sucker antenna |
WUHAN RADARKING ELECTRONICS CORP.
Introduction:
Wuhan Radarking Electronics Corp. is a modern share enterprises which focusing on the smart Internet of things(IOT) /smart grid energy consumption sensor/intelligent electric safety integrated solution. It established in 2002(former name: Wuhan Radarking Co.,Ltd.)and went public on January 27, 2015 with the stock abbreviation RADARKING and stock number 831722. It owns the independent R&D center and factory which is the key recommended high-tech enterprises in Wuhan city, Hubei Province.
It mainly R&D, manufacture and sell the integrated solution of smart Internet of things(IOT) energy consumption sensor/smart grid energy consumption sensor/energy consumption information acquisition and transmission(Collector, Concentrator, Communication Module), smart electric meter, smart water meter, “RDK” energy Internet of Things(IOT) intelligent energy safety integrated solution, digital campus energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter/All-in-One Card cloud computing total charging management integrated solution, energy consumption monitoring and analysis integrated solution, mobile phone APP(Energy Consumption, Fast E Top Up).
Principle:
It pursues “Military Academy, Military Morality, Character, Integrity”business philosophy. According to the “ Success once at a time, Advance and reliable, Customer satisfaction, Continuous improvement” quality policy, produce the military high standard products depend on the talent and technology advantages. By military character, do the man first and then work, and provide the high quality products and favorable service to the domestic and overseas clients. With the high quality products and favorable service, it has won the good reputation from clients and won the large market share. (The group users has more than 3000).
Management:
We have a high efficiency, innovative, serious management team, and the factory has already passed ISO9001-2008 QMS, and ISO14001-2004 environment management system. It has not any batch quality problem since establishment. AQSIQ( State Quality Inspection Administration) take the spot checking of our electric meter during 2009-2016, and all the meter passed the inspection. Fully proved that the production is according to our quality management system, and the product quality is stable and reliable.
Oversea Market:
Quality product performance and good reputation, our products are not only successful sales in China, but also have been exported to more than 100 countries and regions in the world, including: Mongolia, Malaysia, Bangladesh, Germany, Italy, Russia, Brazil , India, the United Arab Emirates, Saudi Arabia and other countries, the products are subject to a great welcome and praise.