Single Line Paging ControllerThe 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 heard 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 different phone lines by connecting multiple units.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)- Doorbell switch input (lighted or non-lighted) for activating door chime (ding-dong sound 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.- Complete with power supply