Line level wall mounted microphone

Line level wall mounted microphone. Anti-ligature and vandal-resistant design. 12 gauge stainless steel. Omni-Directional pickup with 12 radius/24 diameter. 12Vdc power required @20mA. 30Hz-15kHz. 2.2k? Output Impedance, 60dB SNR. 4.75 H x 2.5 W