2 piece lots of PANASONIC Part # EFR-RUB40K25
40KHz ULTRASONIC RECEIVERS
NEW OLD STOCK PARTS
High Quality bimorph disc type 40KHz Piezoelectric Ultrasonic Air Transducers.
These wide bandwidth ultrasonic receivers are perfect for DIY Bat Detectors, Robotic projects, Alarms, Proximity sensors, Remote controls, Automatic door openers, etc...
Receiver Sensitivity = -45dB min.
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