Canadian Hearing SocietyCHS is a not-for-profit agency and the leading provider of services, products, and information that remove barriers to communication, advance hearing health, and promote equity for people who are culturally Deaf, oral deaf, deafened and hard of hearing. CHS offers a complete roster of essential services, including sign language interpreting; one-on-one language development for deaf and hard of hearing children using play as the medium of learning; employment consulting; sign language instruction; speechreading training; hearing testing; hearing aids; counselling; and, the most complete range of communication devices that assist and augment communication including TTYs (text telephones), visual smoke detectors, baby monitors, signaling devices and alarm clocks.