APM-TEC Type Diameter (mm) Height (mm) Center frequency (Hz) *Min. Sound Pressure Level (dBA) **Min. Sensitivity (dB) Typical Beam Angle -6dB (deg) Function Housing Material
APM-US16.240TR Open 16.2 12.2 40,000 ± 1,000 115 -65 80 Dual (T & R) Aluminum