Internet of things(IoT) is governing the era of modern security systems with the implementation of cloud connectivity to the security devices. In recent years, IoT has been a focus of research. The security systems have been implemented efficiently with the help of IoT. IoT keeps the security devices connected and provide stable interconnection between them. Our proposed system combines the features of an Alert System and IoT to provide a less expensive and smarter alert system in emergency situations. It uses the Radio Frequency (RF) detectors to detect the unique combination of RF signals emitted by easily available RF transmitters. Processing of signals and generation of alerts is done with the help of Raspberry Pi. This will be a less expensive and easy to implement system.