The sensor offers three standard outputs (analog voltage, serial data, and pulse width) that are available on all the MaxSonar®-EZ products. The LV-MaxSonar®-EZ products also operate with very low voltage from 2.5V to 5V with less then 3mA nominal current draw. The LV-MaxSonar®-EZ4™ is an excellent choice when only larger objects in front of the sensor need to be detected.
You can find the datasheet here.