Single Line Paging Controller. The SLP-1 Single Line Paging Controller will allow you to page family members or co-workers from any phone in your home or small office. The pages can be hard over the same speakers that are installed for music distribution. The SLP-1 connects in series with a single existing phone line. The unit has a built-in 2 watt amplifier, pre-amp output, music on hold input, intercom features, and selectable loud ringing. The SLP-1 provides an input for a lighted doorbell switch, allowing a door chime to be heard over existing speakers. Page from several differnt phone lines by connecting multiple units. Applications Whole house paging from an existing phone line Add paging, intercom, and music on hold features for small businesses Loud ringing / night bell Provide unique front and back door chimes when used with a C-1000B or C-2000A Features Whole house/small business paging from existing phones Built-in two-watt mono paging amplifier with gain control Phone to phone intercom Page from several different phone lines by connecting multiple units Music on hold Caller on hold Can provide background music from an external source Background music mute (automatic during paging or touch tone selectable while you are on a call) Selectable loud ringing (electronic warble over speakers) Unique front and back door chimes when used with a C-1000B or C-2000A doorbox controllers Switch selectable On-Hold alarm tones Stereo pre-amp input and line level output for use with receivers and high wattage amplifiers Simple control commands - no touch tone programming Page trigger output (12V signal for enabling paging source input on multi-source amps) Pre-amp volume control Bypass code - ignores all touch tones on next off-hook allowing you to steer through auto attendants, etc. Comes complete with power supply 1 Year Warranty Made in USA.