| Place of Origin |
Guangdong China (Mainland) |
| Brand Name |
audiowell |
| Model Number |
T/R40-18K279-L13-01 |
ItemParameterRemarkResonant frequency40±1.0KHzEcho Sensitivity≥150mVDecay Time≤1.4msDirectivity (X)120±10°Directivity (Y)50±10°Electrostatic Capacitance1800±10%pF1kHz/25Input voltage≤140Vp-p40kHz/ pulse width 0.5ms/ interval 20msMean Time to Failure50000hOperating temperature-40∼+80Storage temperature-40∼+85