BEKA wireless heat detector with integrated siren. Bidirectional wireless heat detector in accordance with DIN EN 54-5 with integrated signal generator and threshold value tracking, contamination level and battery capacity evaluation, EMC fault detection, used for heat detection using threshold values and A2 characteristics, integration into the RFZxxxD fire detection system, and deactivation of smoke detection via the control panel settings as a day-night function. Area or individual detector alarm using integrated signal generator possible via the control panel menu. Teach-in mode with optical display on the detector to display the range and display of the teach-in field strength on the control panel. After interrupting the bidirectional query interval of over 300 seconds with the control panel, the detector switches to autonomous mode and ensures acoustic signaling in the event of a fire in its area. Sensor head change every 8 years. After the sensor head has been changed, no settings need to be made on the control panel and it automatically recognizes the type of new sensor head. If the previous sensor head differs, this must be confirmed at the central office.