This specification includes 200F18TR-2 ultrasonic sensor size, characteristics, performance parameters and precautions, before using this product, please read this specification. 200F18TR-2 has the functions of transmitter and receiver. It generally can be used for roll diameter, tension control, ultrasonic sensor for non-contact detect objects, ultrasonic distance sensor, ultrasonic automation control, ultrasonic liquid level sensor, etc. If you have any questions for other applications, please contact us for details.