Seametrics has revised the IP800 series as of Sept. 1, 2015. The closest equivalent is the IP813P, if you don't need an analog output.
Please look at all the IP8x3 models available at our Seametrics Fixed Depth Insertion Paddlewheel Meter With Mounted FT430 page or the IP8x9 models available at our Seametrics Fixed Depth Insertion Paddlewheel Meter With Mounted FT440 page to select the unit that best meets your needs.