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![Onset HOBO U20 [U20-001-01] Freshwater Water Level Data Logger, 0 to 9 m (0 to 30 ft)](image/cache/wp/gj/Products/Hobo_U20-001-01-200x200.webp "Onset HOBO U20 [U20-001-01] Freshwater Water Level Data Logger, 0 to 9 m (0 to 30 ft)")
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![Onset HOBO U20 [U20-001-02-Ti] Titanium Saltwater Water Level Data Logger, 0-30 m (0-100 ft)](image/cache/wp/gj/Products/Hobo_U20-001-02-Ti-200x200.webp "Onset HOBO U20 [U20-001-02-Ti] Titanium Saltwater Water Level Data Logger, 0-30 m (0-100 ft)")
