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SIEMENS BTC-1. 500-891185 Backup Tone Card. - New / Open Box.
Installation Instructions
Model BTC-1
Backup Tone Card
The Model BTC-1 Backup Tone Card from
Siemens Industry, Inc. provides two tones
for the MXLV System that can be selected
by dipswitches. This card can be installed on
top of the ACM-1 to provide backup of the
two primary tones should the tone generator
of the ACM-1 fail. The BTC-1 can also be
installed on the OCC-1 Output Control Card
module to provide a default tone when the
low power riser fails and when the OCC-1
loses contact with the MMB.
