TOA CS-154U Wide Range Paging Speaker Built In 70.7V/100 V Transformer - Wide-Range Paging Speakers for voice paging, background music and tone signaling distribution. - Weather-Resistant to withstand demanding environmental conditions. - Constant Directivity Coverage (CS-154/U and CS-304/U). - High Sensitivity: up to 98 dB (1 W/1 m). - Moisture-Resistant Speaker Component (4.72"). - Built-In 70.7 V/100 V Transformer with screwdriver-adjustable power taps. - Lightweight, Sealed Enclosure prevents moisture damage. - Cable Strain-Relief. - Polyurethane Resin Paint resists the fading effects of ultraviolet light. - IEC IP-64 Standards Compliant for dust and moisture-resistance. - Wide Temperature Range -4 F to 131 F. - Stainless-Steel Mounting Bracket for easy installation and aiming in wall, pole or ceiling-mount applications. - Protective Stainless-Steel Mesh Grille prevents speaker damage.