Elements of a Security System – Part 4, by J.M.
(Continued from Part 3.) The second type of alerting – remote signal back to a centralized alarm console with a wired or wireless connection when the tripwire is tripped – can be a bit more complicated. In either case you can use something as simple as the clothespin switch to connect two wires to close the circuit, or to ‘press’ the button on a remote transmitter to trigger a relay that set off a light/buzzer. Regardless of the use of local versus remote alerting, if there are any electronics or other components that could degrade when exposed to the elements …