International Journal of Scientific Research and Engineering Development

Home automation is becoming an user-friendly Voice Controlled Home Automation System using an Arduino Nano microcontroller and an offline essential part of modern living as it improves comfort, energy efficiency, and accessibility. This project presents a cost-effective and such as a fan and light through voice recognition module. The system allows users to control electrical appliances predefined voice commands without requiring an internet connection. The core of the system is an AI Thinker-based offline voice command recognition module that detects specific spoken phrases and sends corresponding serial integer data to the Arduino. The Arduino processes these commands and controls a two-channel relay module to switch AC and DC loads such as lamps and motors. A 5V SMPS power supply provides regulated power to all components. Indicator LEDs are used to show system power and command detection status, making the system intuitive and interactive. Unlike cloud-based smart home solutions, this system works fully offline, ensuring privacy, reliability, and faster response time. The project demonstrates how embedded systems can be used to develop low-cost automation solutions suitable for homes, hostels, and small offices. It is particularly beneficial for elderly and physically challenged individuals who may find manual switching inconvenient

Shifa Bilal Tamboli, Simeen Phiroj Mulani, Arman Tajuddin Shiakh,"Offline Voice Recognition Module for ON/OFF Appliences" International Journal of Scientific Research and Engineering Development, V9(2): Page(2162-2166) Mar-Apr 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.