The OMNITRONIC CS-5 is a passive 5-inch full-range flush-mount ceiling speaker for 100 V public address systems. It is designed for speech and background music in indoor installations including restaurants, bars, hotels, sports facilities, and similar venues. The speaker has a 5 W RMS rating, a frequency response of 100 to 10,000 Hz, 90 dB sensitivity, and switchable 1.25 W, 2.5 W, or 5 W power tapping. Its housing is made of ABS and features a black scratchproof and shockproof metal grille.