LRAD Corp., which produces highly directional devices that send high-volume sound over very long distances, said it received $560,000 in orders for two units under a U.S. Navy contract.

The company said it will ship both long-range acoustic hailing devices before the year is over.

The Navy awarded a five-year indefinite delivery, indefinite quantity contract to LRAD (Nasdaq: LRAD) in June 2013. The deal has a $12.2 million ceiling.

Rancho Bernardo-based LRAD said the remotely operated, all-weather LRAD-RX systems will be mounted on naval vessels for long-range communication, security and safety use.

LRAD stock has traded between $1.77 and $3.88 over the past 52 weeks. Shares closed April 28 at $2.48.