raspberry pi + flowmeter FS-8800 - 2 wires

[skonec]

Hallo

I have a question- i got flowmeter FS-8800 and FS-4400 with 2 wires- black and red.

Maybe somebody know - can i connect this sensors to raspberry pi?? i founded only flowmeter with 3 wires (black, red, yellow)

Thank You very much for answer.

Greetings
Skonec

[joan]

It's best if you post links to specs. It makes it easier to find the device you are talking about.

According to http://www.digisavant.com/PDF/FS-8800H%20-%20Spec.pdf there are three terminals. Perhaps if you follow the black/red wires back to the device you can see the third?

[KLL]

http://www.digisavant.com/PDF/FS-8800-Spec.pdf
switch type ?dry contact? 2 wire