UPDATE:
What I had in the bin was the 2 other sensors from that site link above. The, USTR60-10H and the USTR40-14A neither gave back any data to the Arduino. The readings just 'time out' to the highest height setting. Makes me think the US1440 might not work ugh.
Maybe I am not understanding the whole ultrasonic thing, none of these sensors where labeled as Receiver or Transmitter like the ones I removed from the sensor itself....