Abstract
This paper mainly focuses on the controlling of home appliances remotely and providing security
when the user is away from the place. The system is SMS based and uses wireless technology to
revolutionize the standards of living. This system provides ideal solution to the problems faced by
home owners in daily life. The system is wireless therefore more adaptable and cost-effective.
The HACS system provides security against intrusion as well as automates various home appliances
using SMS. The system uses GSM technology thus providing ubiquitous access to the system
for security and automated appliance control.
Keywords: Short Message Service (SMS), Global System for Mobile communication (GSM),
Radio Frequency (RF), AT Commands, ubiquitous access and Automation.
Introduction
The aim of the paper is to investigate a cost effective solution that will provide controlling of
home appliances remotely and will also enable home security against intrusion in the absence of
home owner.
The motivation is to facilitate the users to automate their homes having ubiquitous access. The
system provides availability due to development of a low cost system. The home appliances control
system with an affordable cost was thought to be built that should be mobile providing remote
access to the appliances and allowing home security.
Home security has been a major issue where crime is increasing and everybody wants to take proper measures to prevent intrusion. In addition there was a need to automate home so that user can take advantage of the technological advancement in such a way that a person getting off the office does not get melted with the hot climate. Therefore this paper proposes a system that allows user to be control home appliances ubiquitously and also provide security on detection of intrusion via SMS using GSM technology. The next section will explain the related work; section 3 explains the proposed system, methodology and algorithm. Section 4 discusses the framework, working, characteristics, strengths and constraints of the system. Section 5 explains the results and section 6 is conclusions and the future work.

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