Philmore LKG Phone Light Flasher & Ringer

FCC registered unit will visually alert when phone rings. Works from phone line voltage. Will NOT work with wireless or mobile phones. No batteries or external power source required. Easily installed on modular phones. Simply plug into wall jack and plug phone into unit. Has switch on the side for flasher only or flasher and ringer. Ringer is not louder than normal telephone ringer but provides an additional ring.