Like the ADA-10/11 models, the ADA-20/21 provide digital relay control. The ADA-20/21 have 2 relays that can be used for strike control and auxiliary output. They also have RS-485 connectors to make ...
Over the years, control relays of various types have been used by the hundreds — even thousands — to control nearly every function in commercial and industrial processes. Today, many of those ...
Access control systems have come a long way from the traditional mechanical lock and key. There is greater demand than ever for convenient solutions to enter and exit buildings and facilities from ...
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