Center frequency       kHz                           

            40.0±1.0

Output sound pressure  dB@30cm/10V sine wave

            ≥105

Receive sensitivity     dB / v / μbar

            ≥-82

-6dB Directivity      deg.

            75 ±10

Ringing Time    ms  

            ≤0.8

Capacitance   pf   @ 120Hz  25℃

            2000±10%

Input voltage  Vp-p

              140

Operating Temperature      ℃

            -40~+80

Storage Temperature        ℃

            -40~+85

Materials of the case

            Aluminum

Type of the terminal  

            Connector

Length of the lead wire      mm

            2500±50