GS828-S4 is a Modbus GSM GPRS Data Logger, and uploads by GPRS. It interfaces with modbus device via RS485 port.

It reads data from Modbus device, logs into internal memory and uploads by GPRS.
During power loss, operation is backed up internal rechargeable battery.

Overview:
* RS485 Modbus Interface
* 6 Analog Channels
* 10 Digital Inputs
* 2 Pulse Channels
* 4 Digital Outputs

Its internal 4MB memory logs more than half year data.
Data can be uploaded to server as fast as 5 seconds interval, or 24 hours to save power.
Flexible data logging interval starts from 1 minute up to 24 hours.

Features
1) Real Time GPRS and SMS Data Upload
2) Integrated 16 bit MCU & Siemens GPRS Module
3) Programmable data input type & alert hi/low
4) Programmable Data Upload Interval & Logging Interval
5) Easy setup via RS232 by PC software
6) Remote Setup by SMS or GPRS
7) RS485 Port support data capturing in Modbus protocol
8) Support Dynamic Domain Name or Fixed IP, UDP / TCP protocol data transmission
9) AC/DC power with internal battery backup

Free Software:
[1] Data Logger Setup software is bundled for routine configuration via SMS remotely, or via RS232 port locally
[2] Data Logger Centre software is also provided for receiving data via GPRS.
[3] UDP/TCP Testing Tool is provided for easy communication testing and user development

[Applications]
* water pipes network real time monitoring - water in and out temperature
* oil/gas pipes network, pump stations
* underground water level real time monitoring
* environmental monitoring system - wind/temperature/humidity/CO2/pressure
* remote Industrial Equipment Monitoring
* rural Equipment Monitoring e.g. Power Plant
* measuring equipment data capture and report via SMS/GPRS