Description Voice alarm product certification is available for the CS-154BS. The CS-154BS wide range speaker is made of ABS resin and has a stainless steel bracket to ensure durability in all types of weather. The Projection Horn Speaker CS-154BS is composed of an extremely high efficiency weather resistant horn, and high quality cone speakers that provide clear and highly directed sound reproduction. It is fitted with a 90-degree horizontal constant-direction horn to ensure uniform sound distribution over a large area. Projection Horn Speaker Features: Outdoor speaker with square weatherproof enclosure High SPL Lightweight impact-resistant material The bracket is made of stainless steel EN 54-24 and ISO 7240-24 certified