Sonar. MB1200 XL MaxSonar EZ

High-Performance Ultrasonic Rangefinder. Like new, very little use. Product Specifications Resolution of 1 cm 10 Hz reading rate 42 kHz ultrasonic sensor measures distance to objects RoHS compliant Read from all three sensor outputs: analog voltage, RS232 serial, pulse width Virtually no dead zone; objects closer than 25 cm are reported as 25 cm Operates from 3.3–5.5 V Low average current requirement of 3.4 mA Small, lightweight module Designed for easy integration into your project or product