Viking Electronics SLP-4 Single Line Paging Controller

Single Line Paging Controller with 4 Audio Chimes/Messages
Add whole-house paging, loud ringing, phone-to-phone intercom, and door chimes to your multi-room audio system
Select 4 CD-quality sounds from a library of 8 recordings or record your own sounds into the USB port
When the doorbell switch is pressed, background music is muted while the chime plays
Connects with a single existing phone line
Built-in 2 watt amplifier
Pre-amplifier output
Music on hold input
Intercom features
Compatible with C-200, C-1000B, and C-2000A
Nearly 6 minutes of recorded audio storage
Powered by 120V AC/13.8V AC, 1.25A adapter
Powers up to three 8 ohm speakers and sixteen 45 ohm speakers