Flashing High Decibel Telephone Ringer from Phillips Set this in-line telephone ringer on high, and incoming calls will chirp like a 900-lb canary that's been hit with a cattle prod. For the deaf, for extraordinarily noisy environments, or for those who are keeping the noise down after bedtime, the ring can be turned off, leaving a handy neon indicator lamp to signal a call. Measures 4-1/4" x 2-1/2" x 1" thick OA, and has a high/low/off switch. Comes with a 3-foot phone cord and needs no other power. Made in the USA for Philips.