- Installs in less than a minute - Compatible with both 70V and 25V systems - High intelligibility and efficiency - Direct and reflected sound paths create wide dispersion angle - Lightweight and durable plastic shell with an off-white paintable finish - Simple three-step installation process - No tool(s) installation - Color-coded mounting studs identify polarity to make the electrical connection easier (no external wires) - High-quality wire-wound volume control on outside of speaker for easy access - Can be installed in any drop ceiling with standard ceiling tiles - Surface-mounting design eliminates need to cut ceiling tile no mess installation - Contemporary design blends/matches any decor - SM4T has switch-selectable multiple taps for controlling output level (taps 4 2 1 1/2 1/4 watts) - O-ring seal holds speaker tight to ceiling surface eliminating whistling and ensures smoother sound without peaks - Textured studs easily pierce ceiling tile and secure wire nut connections - Wide-bottom easy-to-handle mounting wing nuts provide secure speaker mounting - Tile Bridge available (Model SMTB sold separately) - All necessary mounting hardware included - Complies with NFPA National Code 160b and UL-2043 (Report available)