Ajax wireless opening detectors consist of two parts: a reed switch and a magnet in a separate case. A reed switch is an electrical contact in a sealed container that closes as the magnet approaches and opens when the magnet is more than 1 cm away. In this way, the contact alarm sensor registers both the opening and closing, and the security system notifies users and a monitoring station.
Door and window contact sensors are an essential element of any alarm system. In the Ajax security system, opening detectors can activate sounders, run automation scenarios, and integrate third-party sensors — all these features make them an important part of a smart home.
