CTC1642 Expansion module 4 inputs + 2 relay outputs to be combined with CTC1700S/1700MODS
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The CTC1624 module is connected to the GSM interfaces model CTC1700MODS and CTC1700S via flat cable. The module has 2 relays on board with C/N.C./N.O. contacts free of potential that can be controlled by SMS messages and 4 configurable inputs with combination with input status SMS messages. The relay switching can be programmed as bistable or as impulsive from 1 to 9 seconds. The relay status can be controlled by requesting the status from a coded message. The maximum resistive load for each relay is 1Amp/24V. The inputs are normally closed to negative. Each input has 4 telephone numbers available to call with relative SMS messages. The appropriately programmed module allows switching from a traditional telephone line to a GSM line in the event of a lack of the PTSN telephone line.
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