The proliferation of the Internet of Things (IoT) has fundamentally transformed residential living, 
paving the way for intelligent home automation systems that significantly enhance comfort, 
security, and energy efficiency. This paper presents the detailed design, implementation, and 
testing of a comprehensive Multi-Feature IoT-Based Smart Window system. The system is 
engineered for autonomous operation and remote user control, addressing key challenges such as 
energy loss, security vulnerabilities, and manual inconvenience associated with traditional 
windows. At the core of the system is an ESP32 microcontroller, selected for its robust dual-core 
processing capabilities and integrated Wi-Fi/Bluetooth connectivity, which facilitates seamless 
IoT integration. Key functionalities developed include remote control via a dedicated mobile 
application and popular voice assistants (Amazon Alexa/Google Assistant), an automatic rain-
sensing closing mechanism to prevent water ingress, and ambient air quality monitoring using an 
MQ-135 gas sensor to safeguard indoor air quality. A 0.96-inch OLED display provides real-time 
visual feedback on critical parameters such as temperature, humidity, air quality index, and system 
operational status. The actuation is precisely handled by a 12V DC worm gear motor, chosen for 
its inherent self-locking property that ensures the window remains securely in any position without 
continuous power consumption, thereby enhancing safety and energy conservation. The 
implemented prototype demonstrates a practical, cost-effective, and highly efficient solution for 
modern smart homes, successfully merging user convenience with proactive environmental 
responsiveness.