Viking Electronics CTG 2A Network Clock Controlled Tone Generator Locks High grade ABS plastic – contoured Category_Marine Stereos High grade ABS plastic – contoured and textured to compliment factory dash small size and approximately 23 ft 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 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