Hagisonic Ultra Sonic Sensors

Anyone have any success with these sensors? I'm thinking about using the narrow beam model found here (Sorry I can't post links so you'll have to google narrow beam by Hagisonic). Since there isn't much documentation of others using this brand of sensor I noticed it is very similar to the SRF04 by Devantech (a much more popular sensor). I have found some code that other people have posted for the SRF04 sensor to get readings and convert the output to inches. Does anyone know the formula for the Hagisonic sensor? If you have any experience with these sensors feel free to let me know what you think. Thanks!

here is the link to the sensor (This product is no longer available.)

Also you can go to http://www.hagisonic.com/ and browse their ultrasonic sensors and select the Narrow Beam Type 1.

Thanks Again

Does anyone know the formula for the Hagisonic sensor?

Well, if they're like the Devantech devices, I don't imagine sound travels any slower or faster for them.