The Lun-11E devices do not have GSM-modems and use the Lun-11 panel to transmit messages to the monitoring station, and the expander does not have its own battery controller, therefore, it is built directly into the body of the Lun-11 main device.
PPK "Lun-11" constantly monitors the communication line. If communication with any of the connected Lun-11E devices is lost, an event “disconnected” is generated at the monitoring station with an indication of the expander address.
Characteristics:
Supported line types: