| 摘要 |
It comprises a central unit for receiving alarm signals and emitting actuation orders which has expandable relay means located in the actual central unit and, optionally, remote from it, coupled by means of decoders, and also remote-controlled devices for implementing immediate action, a stage for controlling programmable relays, a series channel for an additional printer and decoder means, and programmed actuation order transmitters. The stages forming the central unit are coupled by means of two-wire lines. Applicable to the detection of signals produced by sensors associated with a variety of places and circumstances, capable of altering the conductive status of an electronic component belonging to an alarm installation. <IMAGE>
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