The Ei170RF AICO Deaf And Hearing Impaired Radio Link Strobe Light is a smoke alarm set designed specifically for individuals who are deaf or hearing impaired. It features a powerful strobe light that can be linked to a radio for added safety and convenience. The Aico Ei171RF model is powered by a battery and can also be wall plug-in for added versatility. The unit comes in a sleek white colour and includes one battery for easy installation and operation. Ideal for home security and peace of mind, this alarm set is a reliable option for those who require specialized fire protection.