Blue Sea Systems Submersible Temperature Sensor, 10,000 Ohm, IP68

Overview

The Blue Sea Systems 1820 is a submersible temperature sensor for Blue Sea devices that accept a temperature input. It is rated IP68, uses a 10,000 Ohm sensor at 25°C, and covers a working range from -40°F to 175°F (-40°C to 80°C).

This is the general-purpose probe in the Blue Sea range, so it suits battery compartments, lockers, and other onboard spaces where the sensor may be exposed to splash, condensation, or standing water. The 12 in (30.48 cm) lead and 16 AWG wires make it best suited to installations where the sensing point is close to the monitor or charger connection.

Installation is straightforward because the sensor mounts with double-sided tape and the two wires connect in either order. That keeps replacement work simple and avoids having to sort lead polarity during installation.

Key features

• IP68 submersible sensor body for wet locations around the boat
• 10,000 Ohm sensor at 25°C with a temperature range of -40°F to 175°F (-40°C to 80°C)
• Double-sided tape mounting for quick placement on a clean surface without drilling
• Non-polarized wire connection so either lead can go to either terminal
• 12 in (30.48 cm) lead with 16 AWG wires for short runs near the monitored point
• Works with Blue Sea Systems products that require this temperature sensor input

Compatibility and fit

Fit depends more on sensor type and mounting location than on boat size. The 1820 is the general-purpose submersible version, not the higher-temperature strap-on style used for exhaust or other hot pipe surfaces. On a boat, it makes sense anywhere the probe needs to stay in a damp area and read a moderate temperature range.

It is also the same sensor supplied with select Blue Sea temperature monitors and P12 battery chargers. Before ordering, the important check is whether your Blue Sea unit is set up for this sensor style and whether the 12 in lead length suits the mounting point on your boat.

Installation and setup

Mount the sensor to a clean surface with double-sided tape, place it close to the point you want to monitor, and route the short lead where it will stay protected from chafe and vibration. Because the sensor wires are non-polarized, either wire can connect to either sensor terminal on the receiving device.

Use on board

This sensor is a good match for owners replacing a failed Blue Sea probe or adding temperature feedback to a compatible Blue Sea electrical system. It fits boats where the sensor location may see washdowns, spray, or condensation, but does not call for a dedicated high-temperature exhaust sensor.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.

Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.