TAMPER_ALARM

Published:2009/7/12 22:44:00 Author:May | From:SeekIC

The silicon-controlled rectifier (SCR1) operates as a memory device to indicate a security breach in a room, desk drawer. safe. etc. Switch S1 can be a mechanical or magnetic switch. Position S1 in an object that you want to keep protected, making sure that the switch will close when the object is tampered with. When S1 closes, SCR1 turns on, lighting LED1. Pressing S2 resets the circuit.



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