Home security systems are a set of electronic devices that work together to protect a home from burglars and intruders. These systems consist of several components, including security cameras, motion sensors, entry sensors, glass break sensors, sirens, keypads, key fobs, panic buttons, base stations, yard signs and window stickers, and smoke and carbon monoxide detectors. Key components of a home security system include a control panel, door and window sensors, motion sensors, glass break sensors, and security cameras, which communicate their status to the control panel and to the homeowner’s smartphone. Communication protocols differ from system to system, but most use Wi-Fi or cellular data to connect to the monitoring center. Professionally monitored security systems alert the alarm company when a problem arises, and a trained security expert may attempt to communicate with the homeowner or emergency contacts.