2PCS MIC Module Microphone Module Active Microphone Head Module 65DB New
Amplification factor: 65Db. This international order may take longer to arrive. I’ll get back to you within 12 hours.
10PCS Ultrasonic Sensor, Transmitting 16mm with A Frequency of 40K TCT40-16T
Transmitting Sound Pressure at 10V (0dB = 0.02mPa): > 117dB. Product Information: Ultrasonic Sensor. Size: 16mm. Nomina l Frequency: 40KHz.