Some hearing-impaired Canton residents are about to get smoke detectors suited to them. Canton’s Council on Aging received a shipment of 30 smoke and carbon monoxide detectors for the hearing-impaired, and they will be installed for residents identified by Council on Aging director Diane Tynan. Fire Chief Charles Doody will perform the installations this week. The carbon monoxide detectors give off a strobe light when there is a dangerous level of carbon monoxide in the home, Doody said. The smoke detectors use a radio transmitter to make a device installed in a resident’s bed vibrate to wake the person up, according to Doody. Doody said he believed Canton is ahead of most communities in installing such technology and praised Tynan for looking into it and securing a grant to fund it.