GE EST iO64

Appendix D: Applications
254 EST iO64 and iO500 Technical Reference Manual
Sounder base applications
The following applications can be used with the SB4U and Signature
sounder bases.
Local alarm signaling application
In local alarm signaling applications, the audible detector base
automatically sounds an alarm signal only when its detector is
activated (initiates an alarm event). All other audible detector bases
on the same riser remain silent until their detectors are activated.
The audible detector base, once activated, continues to sound an
alarm signal until smoke is cleared from its detector and the control
panel is reset.
Typically, the 24 VDC riser that supplies power to the audible
detector bases is supervised using an RM1 Riser Monitor module.
You can also use a CT1 module and a PAM-1 control relay.