Detailed Product Description

Features:
1) Function: transmitter and receiver
2) Terminal: pin 
3) Housing material: aluminum 
4) Sound pressure level: >/=120dB±3dB 
5) Sensitivity: >/=-60dB±3dB 
6) Center frequency: 40+/-1.0kHz   
7) Nominal impedance: 1,000 Ohm  
8) Static capacitance (pf): 2,400+/-20% 
9) Bandwidth:
    a) T40 - 160: 2.0kHz
    b) R40 - 160: 2.5kHz
10) Ringing: 1.2 (max.) 
11) Total eam angle (typical): 80°
12) Operating temperature: - 20 ~ 70°C 
13) Storage temperature: - 30 ~ 80°C;
14) Applications: range finders, burglar alarms, automatic doors, 
      remote controls, ultrasonic distance meters