Wireless hearth detector with warmth and smoke sensors. Contains a developed-in siren for alarms and situations notification. Operates as Section of the Ajax method or without the need of pairing using an Ajax hub. Connector Add-ons are used for connecting sensors to other devices for example PLC's, Cameras, and encoders. https://detector-equipment-by-tes33445.win-blog.com/14634947/testifire-detector-testing-equipment-for-dummies