We have just added the new HRLV Maxsonar Ultrasonic sensors. These new sensors allow High Resolution readings. Many different beam patterns to help suit all needs. HRLV-MaxSonar-EZ0 Ultrasonic Range Finder HRLV-MaxSonar-EZ1 Ultrasonic Range Finder HRLV-MaxSonar-EZ2 Ultrasonic Range Finder HRLV-MaxSonar-EZ3 Ultrasonic Range Finder HRLV-MaxSonar-EZ4 Ultrasonic Range Finder