1.Blind zone<0.30m 2.Defend class:IP65 3.Best Price,fast delivery 4.Maunfacturer's Offer 5.High Quality with CE,RoHs,FCC 22kHz Ultrasonic Transducer in air, Ultrasonic sensor for distance measurement Technical parameters Model TA00225Center resonant frequency (kHz)22KHz±2.0KhzBandwidth2.0KhzDetection distance0.8~30mBlind zone<0.8mLaunch angle beam (-6dB full angle)15±2°Sensitive-60dB ...