![Blue Sea 1821 Universal Temperature Sensor [1821]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/608x608/products/9031/10912/64340XL__26639.1715734655.jpg?c=1 "Blue Sea 1821 Universal Temperature Sensor [1821]")
![Blue Sea 1821 Universal Temperature Sensor [1821]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/1500x1500/products/9031/10912/64340XL__26639.1715734655.jpg?c=1&imbypass=on "Blue Sea 1821 Universal Temperature Sensor [1821]")
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 ![Blue Sea 1820 Submersible Temperature Sensor [1820]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/2821/3413/38072XL__72170.1715720801.jpg?c=1 "Blue Sea 1820 Submersible Temperature Sensor [1820]")
Blue Sea 1820 Submersible Temperature Sensor [1820]
Blue Sea Systems
DEAN-38072
$17.99
RRP:
$29.99
1820 Submersible Temperature SensorFeatures:General temperature sensor designed to work for most applications.Easy double-sided tape installationFully Submersible (IP68)Wires connect in either...
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![Blue Sea 1741200 Mini OLED Temperature Monitor - Blue [1741200]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/15282/18474/80392BXL__94069.1715748706.jpg?c=1 "Blue Sea 1741200 Mini OLED Temperature Monitor - Blue [1741200]")
Blue Sea 1741200 Mini OLED Temperature Monitor - Blue [1741200]
Blue Sea Systems
DEAN-80392
$66.99
RRP:
$113.99
1741200 Mini OLED Temperature Monitor - BlueMonitors essential electrical system parameters on a bright, waterproof, daylight readable OLED screen.Features:Compact size enables mounting in any...
![Blue Sea 1741 Mini OLED Temperature Meter [1741]](https://cdn11.bigcommerce.com/s-hbdnd2os5x/images/stencil/590x590/products/9030/10911/64338XL__84208.1715734653.jpg?c=1 "Blue Sea 1741 Mini OLED Temperature Meter [1741]")
Blue Sea 1741 Mini OLED Temperature Meter [1741]
Blue Sea Systems
DEAN-64338
$66.99
RRP:
$113.99
Mini OLED Temperature MeterMonitors essential electrical system parameters on a bright, waterproof, daylight readable OLED screenCompact size enables mounting in any convenient locationReverse...
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Mastervolt Alternator Temperature Sensor [41500400]
Mastervolt
DEAN-84885
$14.99
RRP:
$25.99
Alternator Temperature SensorWhen using the Alpha Pro in combination with non-Mastervolt alternators, this alternator temperature sensor may offer additional protection against over heating.
