The LoRa Alarm Receiver signals the receipt of wireless alarms via periodic audible tones through a loudspeaker. These alarms are triggered by CoSi ISM emergency transmitters and transmitted over a distance of up to approximately 2 km via the ISM LoRa gateway.

The person receiving the alarm acknowledges it by pressing the device button, thereby resetting it at the same time. This triggers a voice announcement stating the exact reason for the alarm. In this way, for example, alarms triggered manually can be distinguished from automatic alarms, such as fall alarms, alarms from smoke or temperature detectors, motion detectors, etc. The announcements also specify which of the maximum of three possible ISM LoRa gateways received the current alarm. This allows alarms to be assigned to different buildings.

Thanks to an integrated battery backup, it is possible to disconnect the alarm receiver from the mains power supply for several hours and operate it, for example, in the garden. If the battery has discharged to a critical level as a result, users are also informed of this in good time via the loudspeaker.