| ITC Model Number | Model number assigned by ITC |
| fr | Resonance frequency, associated with the peak of the impedance curve. |
| Frequency at Receiving | This is the same as the transmitted frequency which is fr. |
| Transmit Bandwidth | The bandwidth over which fr will move in relation to the operating temperature range. |
| Transmit Sensitivity | Acoustic output per voltage input expressed in dB at a one-foot range. |
| Receive Sensitivity | Voltage output per acoustic input expressed in dB |
| Drive Voltage | Maximum drive voltage (tone drive) rating |
| Nominal Impedance | Impedance in ohms at fr |
| Beam Angle | Nominal half-power (-3 dB) beamwidth at fr |
| Operating Temperature | Temperature range in which transducer functions per nominal specification |
| Storage Temperature | Temperature range in which transducer may be stored without damage |
| Humidity | Range of relative atmospheric humidity in which transducer functions per nominal specification |
