LEGO® Set:  9846 NXT Ultrasonic Sensor

Name: NXT Ultrasonic Sensor
Price: $32
Pieces: 1
Release year: 2006
description: NXT Ultrasonic Sensor contains an Ultrasonic Sensor for the Mindstorms NXT. The Ultrasonic sensor allows Mindstorms robots to sense objects in front of them, up to 250 cm away.