Valcom V-9022-EC. System type: single speaker, Recommended usage: other, Speaker placement: Celing-mountable. Frequency range: 80 - 10000 Hz, Sensitivity: 96 dB, Signal-to-Noise Ratio (SNR): -70 dB. Connectivity technology: Wired. Housing material: Steel. Width: 603.25 mm, Depth: 95.25 mm, Height: 603.25 mm