My project is monitor and control home appliances using the Internet of Things, which is a system through connecting home appliances with sensors to operate automatically, such as lighting and fans and some alarm sensors, such as gas leakage, temperature, and humidity sensors. All these functions are handled wirelessly using the Blynk app on smartphone, and C# application on Laptop to shows the results and reading of the sensors . These applications help and make it easier for homeowners to monitor the status of their devices with ease via a smartphone or laptop, and also connect the devices to sensors to control them so that they operate automatically. They reduce human effort and help reduce electricity costs. Some sensors and devices help and alert homeowners about dangers that occur in the home, such as gas leaking.