It has come to my knowledge that so many of fire alarm systems installers are faced with problem of replacing the old Zeta addressable standard protocol devices. Zeta, since 2004 phased out the standard addressable protocol devices while they rolled out new model of devices; the Fyreye MKII protocol devices. Since then, there's no longer Support for the standard protocol devices. However, all hope is not lost.
For the securetone addressable sounders having standard protocol, the replacement has been rolled out in MKII protocol.
This device can now be conviniently replaced with the latest MKII - AXT/R Sounders and they will still work very well with the same standard protocol:
Check back for more updates on replacement devices of standard protocol devices to MKII protocol devices