The short message system (SMS) of a standard mobile phone can be used for remote site monitoring and controlling various equipments. This feature of a standard mobile phone can be implemented for a variety of industrial applications. The main attractive feature of this system is that, the user can monitor and control his desired equipments from any part of the world. The user may get the status of a remote device like pressure, temperature, voltage, current, On/Off condition, weight etc by sending respective SMS to the remote device.

The Global Positioning System (GPS) is a satellite-based navigation system. Vehicle Tracking System is an efficient system for tracking and monitoring of commercial and passenger vehicles. DIGILOG SYSTEMS offers complete solutions for Vehicle Tracking and Fleet Management. A Global positioning system (GPS) receiver calculates its position by precisely timing the signals sent by the GPS satellites high above the Earth. Now, with distance measurements from a few more satellites, the receiver can determine the user's position and sends this information to the user, using a GSM module through GPRS. The GPS/GPRS based vehicle tracking system, which uses the GPS and GSM technologies to enable users to keep track of their vehicles.