250ER25F
250ER25F (receiver) is a ultrasonic sensor and it is usually used coupled to 250ET25F (transmitter).
Electroacoustic transducers
Electroacoustic transducers
250ER250
The couple of transducer 250ET/R250 is suitable for outdoor low cost applications where the minimum measurable distance is a fundamental parameter or anyway for simple detection of people and objects passing.