aquatic technology, inc. cpr instruction sign aquatic technology, inc. perform cpr (instructional safety sign). our cpr instructions are kept up-to-date with the american heart association standards and guidelines. this sign is a lightweight, durable, weatherproof indoor or outdoor sign printed on white styrene (plastic). this swimming pool and facility pool sign is designed for harsh swimming pool and outdoor environments. it includes a brass grommet in each corner for easy hanging or mounting. this sign is printed using our high-quality weather and sun resistant inks.