... transmitter and receiver. It’s long range type, generally can be used for ultrasonic range finder, ultrasonic sensor for ... please contact us for details.OUTLINE DIMENSIONCHARACTERISTICSPart Number40E60TR-4ConstructionLong Range TypeUsing MethodReceiver and Transmitter (Dual use)Nominal Frequency40 ... its installation location.3, To ensure reliability and long service life, do not use the sensors where ...