The Sonic Link Model SA 201 with its sleek, modern case will alert you when it receives signals from the Sonic Alert signalers by flashing any lamp that is plugged into its Pluglet (Plug-outlet). The Pluglet allows you to keep your table uncluttered by unsightly lamp cords. The signaling lamp can also be used for normal room lighting by using the lamp on/off switch. There is also an indicator light to remind you to turn on the attached lamp.