| Part number | NU40A18TR-2 |
| Construction | Water proof type |
| Using method | Dual use |
| Center frequency | 40.0±1.0KHz |
| Sound pressure level | 100dB min. |
| Sensitivity | -84dB min. |
| Capacitance | 1900Pf±20% |
| Ringing | 1.2ms max. |
| Maximum input voltage | 120Vp-p |
| Directivity | 50°±15°(-6dB) |
| Operating temperature | -40°C~+80°C |
After sale instructions
