This speaker includes a 40 W PoE amplifier for simplified installation and set up. Driver components consists of one 8.0 inch polypropylene woofer and one 1.0 inch soft dome tweeter in a ported enclosure. The included pre-mountable surface-mount bracket allows for quick and easy installation and the powder-coated aluminum grille keep the speaker looking good in most environments. The system is UL 60065 approved. IP-Rating: IP65. Included accessories: Safety cable, wall mount bracket, conduit connector, and port plug. If used outdoors, port plugs must be installed to ensure protection from moisture. *Note: If used indoors, remove the grille and take the plug out of the port for greater bass output. Port must remain plugged to maintain IP65 rating in outdoor use. Also: SoundTube IPD speakers are NOT compatible with PoE++. 30W PoE maximum (or 40W maximum with STNet Switch II)