GAI-Tronics Explosion-proof Speaker Station Features: Designed from toss metal and is appropriate for inside use For growing exterior, it should be located in a GAI-Tronics (Model 10444-003) Weather resistant Non-metallic Enclosure Device stops sound reviews between channels during paging by muting the station s associated speaker Silence function enabled Strength feedback - 90-140 V ac; 120 V ac moderate, 50-60 Hz; 0.5A maximum Result - @ 120 V ac: 12 w minimal into 8- or 16-ohm load Wall structure or order mountable, four 3/8-inch placed growing feet Heat variety range - -22 F to +158 F Measurements - 13.1 H 7.9 W 5.6 D