Find a water depth sensor ?

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i'm looking water depth sensor (sonar transducer not pressure sensor).

- operating range 1 meter 30 meter

- output signal : analog 1- 5 vdc proportionnal or pulse width modulation (for arduino)

- power supply : < = 12 vdc

- refresh time < 1 sec

- environnement : salted water, installed on moving buoy (movement causing wave on open water plan)

can find kind of sensor (and controler) ?

thank help


alain

in thread recommended one:

http://www.ebay.com/itm/marine-digital-water-depth-sounder-deep-shallow-alarm-/220698970051?

it puts out depth on serial connection (4800 baud).



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