The T-710F is a waterproof horn speaker built-in 70v/100v transformer. The 70v/100v transformer technique reduces line losses on longer distance and allows easy parallel connection of multiple loudspeakers. The built-in horn speaker driver is designed of wide frequency response 300 to 6.5kHz, the rated power output 20W could meets different applications varies from room size and ambient noise surroundings. The aluminum enclosure and metal bracket are of white color. Easy and secure wall mount installation through the supplied mounting bracket. It is ideal choice for industrial and commercial applications in the outdoor area of parking, park, garden, corridor and playground where paging is needed.