1 Center frequency (KHz)中心频率 58?1          
2 Echo Sensitivity (mV)回波 4.0?1.0   
3 Decay Time (ms)余振 ≤1.7    
4 Directivity (deg)  X-axis水平角度 90?15   
5 Directivity (deg)  Y-axis垂直角度 45?10    
6 Capacitance (pF)电容 2000?15%   (at 25±3℃,1KHz)
7 Allowable Maximum Input Voltage(Vp-p)输入电压 140 (58KHz,Pulse width 0.35ms, interval 20ms)
8 Mean Time To Failure (h)平均失效时间 50000
9 Operating Temperature(℃)工作温度 -40～+85
10 Storage temperature(℃)贮存温度 -40～+85