Universal Visual Indicator. When used with an analog phone line, the VR-1B will provide ring indication, on the phone indication and message waiting indication for both stutter dial tone and standard message waiting voltage. In this application the VR-1B connects directly to tip and ring. When used with electronic or digital phones, the VR-1B won t have you guessing which phone is ringing in busy offices. The flashing LED can be seen up to 100 feet away. The VR-1B connects directly to the electronic phone s speaker. When used with a headset, you can end those nagging interruptions that occur when associates don t realize you are on the phone because you are using a headset. The VR-1B will flash on and off indicating to everyone that you are on the phone and you are not to be disturbed. The VR-1B installs in the handset/headset jack using an included T adapter. Applications Households Call centers Telemarketing Product support groups Office cubicles CO based voice messaging Purchasing departments Sales offices Features Displays ringing , on-the-phone or message waiting LED visible up to 100 ft (30m) Power supply included Attractive new compact package Connects with a modular cord Special T adapter provided for handset applications Easy to install.