E-Robot Cleaner / Robot cleaner

The hearing-impaired often have a hard time dealing with things on the phone. In addition, when there is a fire, it is very much likely for them to get injured or harmed in any way as they are not able to hear a fire alarm. There is, of course, a way to protect the hearing-impaired from that kind of tragedy, which is keeping a hearing dog specially trained to help the hearing-impaired with everyday life.
However, unfortunately, not all the people with hearing difficulties can afford the hearing dogs. For the hearing-impaired, who are not able to afford the hearing dog, the robot cleaner can perform the role of hearing dogs.