Wireless alarm systems offer easy installation, flexibility, and a range of features for enhanced security. They operate on frequencies like 433 MHz or 868 MHz, with Wi-Fi or cellular connectivity options. Typical components include a control panel with an LCD or touchscreen, door/window sensors, motion detectors, smoke and glass break sensors, and a loud siren (85-110 dB). Many systems offer smartphone app integration, voice control, and support for home automation. They often include battery backup, tamper alerts, encrypted communication, and the ability to expand with additional sensors and devices.