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This paper details the overall design of a Wireless Home Automation System (WHAS). This is fuelled by the need to provide supporting systems for the elderly and the disabled, especially those who live alone. The automation centre's on recognition of voice commands and uses low-power RF Zig-Bee wireless communication modules which are relatively cheap. The home automation system is intended to control all lights and electrical appliances in a home or office using voice commands. The zig-bee can receive the voice and send the voice data to the ARM9 controller and then the controller converts the voice into required format and then again send the data through the zig-bee to the another zig-bee and to the micro controller where the devices are attached to it.
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