45504 EV3 Ultrasonic Sensor

45504 EV3 Ultrasonic Sensor is a Mindstorms set released in November 2013. It contains a ultrasonic sensor which can be used with 31313 Mindstorms EV3.
==LEGO.com Description==
==External links==
* 45504 EV3 Ultrasonic Sensor on Brickset
Category:Mindstorms
Category:2013 sets
Category:40000 sets