Yes this S549 will work on your DS-2.
The power supply you referenced above (the S549) isn't the right cord. Instead, you need the S199, which I'm referencing below. It's Tundra # is 51137. https://www.etundra.com/kitchen-supplies/food-scales/accessories/edlund-s199-e-80-series-scale-power-adapter-with-male-end/
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