The lightweight Phone Strobe Flasher flashes when there's an incoming telephone call, alerting you visually without audible sound. To use, plug the Strobe Flasher into the wall phone jack, then plug your phone into the Phone Strobe Flasher.
- Works with telephone, videophone and most PBX phone systems
- Dome-shaped cover and bright 10 candela LED
- Plugs into wall phone jack
- Powered by telephone line - no batteries required