Non-two-wire system sound and light control stairs delay switch circuit(1)

Published:2011/6/27 22:50:00 Author:Ecco | Keyword: Non-two-wire , system , sound , light , control, stairs delay switch | From:SeekIC

The use of two-wire connection, that is ,the switch only connects two external outgoing lines, so the installation is very convenient. Non-two-wire system sound and light control stairs delay switch circuit is shown as the chart, although the installation has too much trouble, the work has very good reliability, and in some cases it is still quite useful. In the Figure, K can use JZC-22F, DC12V small medium power relay, and T uses 220V/12V, 5VA small, high quality power transformer and other components are required as shown.



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