Abstract: An electronic apparatus particularly suitable for processing, memorizing, utilizing and returning electrical signals and coded messages, includes essentially two sections (A, B), the first (A) constituting a self-contained, self-powered information unit provided with circuits for the wired or wireless reception of coded messages, decoding circuits for said messages, and monitoring circuits and/or circuits for automatically checking correct operation, the second (B) constituted essentially by a plurality of different units (B1, B2, B3, B4) to which, singularly and/or simultaneously, the first section (A) can be connected for the transfer, processing, recording and utilization of the signals provided by said section (A) in relation to the specific function to be performed, and for the deactivation of said section (A).

Abstract: The present invention pertains to a remote signalling apparatus particularly suitable for remote surveillance purposes and provides direct signalling of occurred events via the actuation of optical and acoustic alarm reporting devices, and further provides for retransmission signalling of occurred events via the use of remote signalling systems of the radio-electronic transmission type and/or the telephonic transmission type. Apparatus is provided to detect and indicate the occurrence of a malfunction of a transmitter or receiver unit, while further providing irrefutable proof of occurred events by recording the occurrence of the same along with the date and time of such occurrence.