Name: 433Mhz GSM 3G Wireless RTU

Model: S280

The Wireless GSM 3G RTU(Remote Terminal Unit) S280 is a cost effective remote terminal unit. It inbuilt quad band GSM/GPRS module (Or WCDMA/CDMA2000) , ISM Band 433Mhz Radio Frequency module, and ARM® Cortex™ 32 Bit RISC Core. It is a multi Isolation I/O port remote terminal unit and wireless data acquisition system.

The Wireless GSM 3G RTU S280 can be used for monitoring maximum 400 distributed I/O endpoints though maximum 50 wireless Data Acquisition Modules by RF 433Mhz wireless network. Also it can be used as for converting the meters, transducers, Data Acquisition modules, PLC data via RS485 serial port to 433 MHz wireless network and then transmits it to GSM/SMS/GPRS/3G/Ethernet network. It performs as a wired – wireless – SMS/GPRS/ 3G/Ethernet/RS232/RS485 gateway. The range covers about 2~5Km, plus WT-02 Wireless repeaters can increase the wireless distance.

The Wireless GSM 3G RTU S280 equips 4 digital inputs, 2 solid relay outputs, power status detection moulde, and onsite temperature and humidity inputs. All of the inputs and outputs are isolation.

The Wireless GSM 3G RTU S280 can be used as Wireless SMS Alarm, when the equipped I/O or 400 distributed I/O alarm occurrence, it also can send pre-definition SMS to up to 10 mobile phone users.

The Wireless GSM 3G RTU S280 is suitable for lots of applications, e.g.: Wireless data logging, BTS monitoring, remote data acquisition, telemetrically, farm, energy saving, agriculture, automatically meter reading system, weather station, storage, factory and other applications.

The Wireless GSM 3G RTU S280 supports Modbus RTU Slave, Modbus TCP, TCP/UDP, SMS and data transparent transmission protocol through RS232/RS485/GSM/SMS/GPRS/3G./Ethernet.

S280 Wireless GSM 3G RTU & Wireless DAM Table

The Wireless GSM 3G RTU can be used as:

• A Wireless Data Acquisition System. Supports monitoring up to 50 wireless data acquisition module for maximum 400 endpoints by 433Mhz wireless network, the range covers about 2~5Km, plus WT-02 Wireless repeaters can increase the wireless distance. Each endpoint can be setup threshold value or alarm conditions, once the value exceed threshold value or activated will send out SMS to alert the users immediately.
• A Wireless Gateway. Though the WT-01 wireless data transfer unit, it can convert the meters, transducers, Data Acquisition modules, PLC data via RS485 serial port to 433 MHz wireless network and then transmits it to GSM/SMS/GPRS/3G/Ethernet network. It performs as a wired – wireless – SMS/GPRS /3G/Ethernet/RS232/RS485 gateway.
• A SMS Alarm Controller. The IO activations or deactivations can be reported by SMS and optionally confirmed by phone calls. Each input can have its own message texts and the message can be programmed by users.
• A Switch with SMS Remote Control. SMS texts for switching particular terminals on/off or pulse output are configurable.
• A Timer-Switch which can be activated automatically. It can be setup when to performs preset logic events, e.g.: timer reports its status, timer switch on/off device or equipments automatically.
• A SMS reporter. The WIRELESS GSM 3G RTU can setup daily automatically report one or more times of its current status to users automatically.
• A Data Logger. The unit can save all of the events or acquisition data in internal memory storage, the historical data can export to CS format via USB port or upload to server by GPRS /3G network according to schedule, no distance limitation.

Typically Applications

Suitable Applications:

1. Security Alarm System applications;                    2. Supervision and monitoring alarm systems

3. Automatic monitoring system;                          4. Vending Machines;

5. Pumping Stations;                                    6. Buildings and Real Estate;

7. Weather Stations remote control and data logging;       8. River Monitoring and Flood Control remote control;

9. Oil and gas pipelines remote control and data logging;   10. Corrosion protection

11. Valve controls;                                     12. Wellheads;

13. Energy saving,street lights control system;            14. Tanks, levels, temperatures,water leakage applications;

15. Transformer stations;                               16. Unmanned machine rooms;

17. Control room application;                            18. PLC and Automation System, M2M;

19. GSM Access Control System, GSM Gate Opener, etc.

System Schematic Diagram

Mainly Features

1.  ARM® Cortex™-M4 32 Bit RISC Core MCU;

2. Quadband 850/900/1800/1900Mhz GSM GPRS Module inside, WCDMA/CDMA2000 Modules are optional.

3. Widely Rated voltage range, 9~36VDC, Inbuilt large capacity rechargeable backup battery;

4. Large internal memory to save up to 3500 historical records, USB port for configuration, upgrade firmware and export records;

5. Inbuilt industrial ISM Band 433Mhz Radio Frequency Half duplex communication module, distance up to 2~5Km;

6.Supports maximum 50 wireless Data Acquisition Modules, will alert users by SMS once the wireless DAM connect failure to ensure the monitoring working properly;

7. Supports maximum 400 wireless distributed I/O endpoints;

8. 2 solid relay outputs, rated capacity is 5A/30VDC,5A/250VAC;

9. 4 digital inputs, compatible to dry contact or wet contact inputs. Logic level: 0~0. 5V or short circuit treated as close, +3~30V or open circuits treated as open;

10. 1 temperature & humidity sensor input for monitoring onsite environment, the sensor model is AM2301, Measures temperatures from -40-80°C,0.5°C accuracy, Relative Humidity from 0-99RH%, accuracy is 3%;

11. 1 RS485 serial port (Optional: RS232) for Modbus RTU Slave to SCADA or data transparent transmission;.

12. I/O ports with opto-isolated, RS232/485/RJ45 with 15KV ESD protection;

13.Supports Modbus TCP,TCP/IP protocol, Definition Protocol and transparent transmission over GPRS/3G/ Ethernet network;

14. Automatically resend the data while GPRS/3G/Ethernet communication interrupt or failure, GPRS/3G failure will alert by SMS text to users;

15.  Supports remotely restart the RTU, and configure& operate it by SMS commands remotely;

16. Supports over voltage protection and phase-reversal protection, provide DC power sources for external device to save wiring cost;

17. 10 SMS Alert and auto dial numbers for receiving alarm message, can program to receive specified alarm message.