SRF04 vs. SRF05

Community General Discussions
1

I used the SRF05 on a previous robot I built a while back and it was pretty impressive. It was also a little expensive. I just got a deal on a box of SRF04's and got them but I can't really find the main difference between the two models.

Can someone illuminate me?

2

I believe the main
I believe the main difference is that the 05 can be used with a single digital io pin, whereas the 04 requires 2.