K-1
Appendix K
Audio Equipment Compatible with 520 Hz Low Frequency
Alarm
Overview The following audio system components have been tested by UL to meet the requirements in
UL464 Section 24.3 "Determination of low frequency signal format". These components have
only been tested with Simplex speaker Notification Appliances and accessories. The only
compatible signal is the "Horn [520 Hz]" added in revision D of the audio library, chipset 42.
Compatible Audio
System
Components
Table K-1. Compatible Audio System Components
Audio System Component Description Model Numbers
Basic Audio with Microphone 4100-9620
4100-9621
Analog Audio Controller Board 4100-1210
4100-1311
Digital Audio Controller Board
Analog Flex 35 and Flex 50 Amplifiers 4100-1312
4100-1313
4100-1363
4100-1364
Digital Flex 35 and Flex 50 Amplifiers 4100-1326
4100-1327
4100-1363
4100-1364
Analog 100W Amplifiers 4100-1314
4100-1315
4100-1318
4100-1319
4100-1320
4100-1321
4100-1324
4100-1325
Digital 100W Amplifiers 4100-1328
4100-1329
4100-1332
4100-1333
4100-1334
4100-1335
4100-1338
4100-1339
Flex Amp Expansion NAC Board 4100-1245
Flex Amp Class A Adapter 4100-1246
100 Watt Expansion NAC Board 4100-1248
100 Watt Class A Adapter 4100-1249
Expansion Signal Card and Accessories 4100-1266
4100-1267
4100-5116