Model：
TR55.5-15.5E279Z-L19-01Applications：
- Parking assist system
- Blind zone detectionDimensions：
Specification：
| NO. | Item | 标准 Specification |
| 1 | Resonant frequency | 55.5±1.0KHz |
| 2 | Sensitivity | 480-1000μS |
| 3 | Decay time | ≤2.20mS at +25℃ ≤2.60mS at -40 to +85℃ |
| 4 | Directivity(deg) X-axis | 90±15(Typical) |
| 5 | Directivity(deg) Y-axis | 45±10(Typical) |
| 6 | Capacitance | 1300pF±20% |
| 7 | Max.input volt | 160Vp-p at-40 to +25℃ 120Vp-p at+25 to +85℃ |
| 8 | Mean time to failure | 50000H |
| 9 | Operating temperature | -40℃～+85℃ |
| 10 | Storage temperature | -40℃～+85℃ |