Blue Sea 1741200 Blue Mini OLED Temperature Monitor
Keep an eye on essential electrical system parameters using this bright, waterproof OLED screen that's easy to read even in daylight.
Features:
- Small and compact, it can be installed anywhere it's convenient.
- Comes with reverse polarity protection for safety.
- Fits into a common 1 - 1/8 in hole.
- Conveniently monitors temperature.
- Can measure temperatures from -40°C to 125°C (-40°F to 250°F).
- Choose to display readings in Fahrenheit or Celsius.
- Blue in color.
- Measures temperature.
- Works with 12V DC or 24V DC nominal voltage.
- Has a resolution of 1°F or 1°C.
- Accuracy is within +-1.25%.
- Operating current is 10mA.
- Can handle 10,000 switching cycles.
- Weighs 0.30lb (0.14 kg).
WARNING: This product can expose you to chemicals including di(2 - ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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Brochure (pdf)

Using this Blue Sea temperature monitor is easy. First, find a convenient spot for it. Since it's compact, you can place it almost anywhere. Make sure to install it in a 1 - 1/8 in hole. Connect it to a 12V DC or 24V DC power source. You can choose whether you want the temperature readings in Fahrenheit or Celsius. When it comes to maintenance, keep it clean and dry as it's waterproof. But don't expose it to extreme conditions. Also, be aware that this product contains chemicals that can be harmful, so follow the warning information from P65Warnings.ca.gov. If you notice any issues with accuracy or functionality, check the connections and ensure it's operating within the -40°C to 125°C temperature range.