Up to 14 Schedules and up to 1,000 Events 6 minutes of CD quality WAV file record time Up to 14 different tones or messages 4 programmable trigger inputs for emergency tones, etc. Automatic Day Light Savings Time and leap year correction Programmable NTP Clock synchronization PC programming software included • RS485 clock SYNC terminals for remote Master Clock control of Viking CL Series RF synchronized clocks Non volatile memory with 4 day clock back up Factory loaded with school/factory tones and evacuation signals ANSI S3.41 , etc. Remote program via TCP/IP network Page trigger outputs 12VDC and DPDT relay Programmable Auxiliary relay contacts DPDT 24 hour digital clock displays hours minutes One mono line level pre amp input and audio output Built in 1 watt mono audio amplifier One isolated audio output for PABX / dial access paging Master volume control Programmable volume control per tone/message Time base selection Network, 50/60Hz or internal Programmable message repeat count for trigger inputs