| APM-TEC | Diameter | Construction | Using method | Nominal Frequency | S P L for transmitter | Sensitivity for receiver | Directivity | Capacitance | Operating Temperature | Housing material |
| mm | Hz | dB | pF | ℃ | ||||||
| APM-US1620TR | 16 | Open | Transmitter, receiver | 20K | ≥105(10V/30cm/sine wave) | ≥-70dBV/μMbar | 80deg | 3000±15%@1KHz | -30….+85 | Al |
