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1.4.5. Sounders
Sounders indicate alarms, entry tones, exit tones and other conditions. There are various types of
sounder:
•
Keypad sounders − A sounder is built into each keypad.
•
External wired siren/strobe unit − The Terxon SX provides connections to drive a
standard wired siren/strobe unit in Self-Activating Bell (SAB) or Self-Contained Bell (SCB)
mode.
•
Loudspeakers − The Terxon SX have connections for a loudspeaker, which you may want
to use to increase the volume or location of setting and unsetting tones. The loudspeaker
must have an impedance of 16 Ohms. You must not connect two loudspeakers in parallel
to the same port.
15
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