This was asked for someone in India as there are many stray dogs which follow innocent people and bite them most of the time. They wanted me to find out and get one device for them and hey how foolish would that be when a dog is running after you and you stand still infront of it...?? Please let me know as its something very serious for someone as it has become a problem for them to get out of their house and if at all they manage to do that, they cant get it.. so please let me know if its available here and where.