Blue Sea 1741200 Blue Mini OLED Temp Monitor

The Blue Sea Systems 1741200 Mini OLED Temperature Monitor reads -40°F to 250°F at one-degree resolution on a blue waterproof display.

Blue is the display color against the standard 1741, and the choice comes down to matching the other instruments on the helm. Most modern marine electronics run blue or white displays, and a single differently colored gauge is the one that looks added on afterward.

Everything else is the same: -40°F to 250°F in Fahrenheit or Celsius, one-degree resolution, and the common 1-1/8-inch mounting hole. That hole is the standard gauge cutout, so it fits a tight helm, console or electrical panel position without new holes.

One-degree resolution suits watching battery compartments, machinery spaces or refrigeration areas where a changing temperature is an early warning. The daylight-readable display is reverse-polarity protected and runs on a broad DC input range while drawing very little current. Explore more marine electrical meters.

• Blue display, matching modern helm instruments
• A single odd-colored gauge looks added on later
• Otherwise identical to the standard 1741
• Fits the standard 1-1/8-inch gauge cutout