Sanger depth gauge question

Who makes the depth gauges for Sanger boats? I recently bought an 04 V-230 and can't get it set correctly. I need to find a manual online or maybe someone here can tell me how to set it. It seems basic with only three buttons, up arrow, set, and down arrow. I wanted to wakeboard instead of spending time figuring it out so I un-plugged it. I'd like to get it working before it's too late..

What is wrong with it?

Not sure of the brand I have, I am on my second one and have the manual for both. The shallow alarm may be set and that causes it to beep? Let us know the problem and maybe we can fix or I can fax a manual to you next week?

There are two or three manufactures of basic depth sounders. Hummingbird, Hawkeye, and Uniden. There could be others, but if you can provide a picture we might be able to help you out. The buttons should give away what manufacture it is.

Or you could call Sanger directly (559)485-2842. If they installed it, you should be able to give them your Hull number and they could look up the build sheet.

My 06 has a uniden

Thanks guys - I looked up the three manufactures and I have the one made by Hummingbird. I was able to download a manual with direction for set up from their website.
I think what was happening was the deep water alarm was going off. With the manual I should be able to figure it out from here. Thanks again for the help.