{"title":"Tank Senders","description":"\u003cp\u003e\u003cspan\u003eExplore our range of marine tank level sensors and senders for monitoring fuel, fresh water and waste tanks. From traditional senders to non-contact radar technology, find options to suit your tank, compatible gauges and onboard monitoring system helping you plan refills and manage capacity with confidence.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"simarine-str1-radar-tank-level-sender-analogue","title":"Simarine STR1 Radar Tank Level Sender – Analogue","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimarine STR1 Radar Tank Level Sender – Analogue\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMonitor your onboard tank levels with confidence using the Simarine STR1. This compact, non-contact radar sender measures liquid levels in tanks from 150 to 2,000 mm high, providing a practical upgrade from traditional float and probe senders.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for fresh, grey and black water, diesel and petrol, the STR1 measures from the top of the tank without touching the liquid. With no moving parts or submerged probes, it avoids sticking floats and reduces the maintenance associated with fouling and corrosion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFlexible connections for existing instruments\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe STR1 provides three analogue outputs simultaneously: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0–180 Ω, 240–30 Ω and 0–5 V\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. A single sender can supply level information to up to three compatible gauges or monitoring inputs, making it easy to integrate with existing onboard instruments. Bluetooth connectivity also allows you to check tank levels through the Simarine Connect app, without requiring a dedicated Simarine display.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimple installation in confined spaces\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePeel-and-stick mounting allows the STR1 to fit directly onto suitable flat, rigid plastic or GRP tank tops, without drilling into the tank. Its compact housing measures just 32.5 mm high and 62 mm in diameter, making it ideal where overhead clearance is limited. Metal tanks require the optional Simarine S5 adapter, available separately.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor suitable installations, an existing sender can remain in place after being disconnected, reducing the work involved in replacing an older unit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCalibration to suit your tank\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSet up and calibrate the sender wirelessly using the Simarine Connect app. Support for up to 100 calibration points allows the displayed volume to reflect irregular tank shapes, giving you a more useful picture of your remaining supply or waste capacity. Built-in slosh filtering helps stabilise readings as liquid moves, while Bluetooth firmware updates simplify ongoing maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eKey features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNon-contact radar measurement with approximately 7 mm resolution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for tank heights from 150 to 2,000 mm.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSimultaneous 0–180 Ω, 240–30 Ω and 0–5 V analogue outputs.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth tank monitoring, configuration and firmware updates.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for fresh water, grey water, black water, diesel and petrol.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNo moving parts or submerged probes to stick, foul or corrode.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow-profile installation on suitable plastic and GRP tanks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptional S5 adapter for metal tanks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e8–35 V DC power supply.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned and manufactured in Slovenia.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThree-year warranty.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Simarine","offers":[{"title":"Default Title","offer_id":57988326621566,"sku":null,"price":77.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/7779\/5710\/files\/SimarineRadarTankLevelSender-3.jpg?v=1788857575"},{"product_id":"simarine-str1-radar-tank-level-sender-analogue-copy","title":"Simarine STR2 Radar Tank Level Sender – NMEA 2000","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimarine STR2 Radar Tank Level Sender – NMEA 2000\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMonitor your onboard tank levels with confidence using the Simarine STR2. This compact, non-contact radar sender measures liquid levels in tanks from 150 to 2,000 mm high and shares readings across your NMEA 2000 network, bringing tank information directly to compatible onboard displays.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for fresh water, grey water, black water, diesel and petrol, the STR2 provides a practical upgrade from traditional float and probe senders. Its radar measures from above the liquid, with no moving parts or submerged probes to stick, foul or corrode, reducing ongoing maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTank information on your existing displays\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe STR2 transmits tank data using the standard NMEA 2000 Fluid Level message, PGN 127505. This allows readings to appear on compatible multifunction displays and monitoring equipment that support the relevant fluid type, helping you keep track of supplies and waste capacity from your helm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBluetooth connectivity also lets you monitor tank levels through the Simarine Connect app, giving you convenient access without a dedicated Simarine display.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompact design with straightforward installation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe STR2 mounts directly onto suitable flat, rigid plastic or GRP tank tops using its peel-and-stick backing. Radar measurement through the tank top removes the need for a submerged sender or a new opening in suitable plastic tanks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt just 32.5 mm high and 62 mm in diameter, the housing fits comfortably into installations with limited overhead clearance. Metal tanks can be accommodated using the optional Simarine S5 adapter, available separately, which provides the opening and non-metallic window required for radar measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor suitable replacement installations, the old sender can remain in place after being disconnected, reducing the work involved in upgrading your tank monitoring.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWireless setup tailored to your tank\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConfigure tank settings and calibrate the sender through the Simarine Connect app over Bluetooth. Multi-point calibration supports up to 100 points, allowing the system to account for irregular tank shapes and translate measured liquid height into a useful volume reading.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eApproximately 7 mm measurement resolution helps you track changes in tank level, while built-in slosh filtering helps stabilise readings as liquid moves. Firmware updates are also handled wirelessly through the app.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eKey features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNon-contact radar measurement for tank heights of 150–2,000 mm.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNMEA 2000 connectivity using Fluid Level PGN 127505.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorks with compatible displays supporting the relevant fluid type and message.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth monitoring, setup, calibration and firmware updates.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for fresh water, grey water, black water, diesel and petrol.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximately 7 mm resolution.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUp to 100 calibration points for irregularly shaped tanks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBuilt-in slosh filtering for more stable readings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNo moving parts or submerged probes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePeel-and-stick mounting on suitable plastic and GRP tank tops.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOptional S5 adapter for metal tanks, available separately.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompact housing: approximately 32.5 mm high × 62 mm diameter.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e8–35 V DC operating supply.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned and manufactured in Slovenia.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThree-year warranty.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Simarine","offers":[{"title":"Default Title","offer_id":57988331110782,"sku":null,"price":109.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/7779\/5710\/files\/SimarineRadarTankLevelSender-3.jpg?v=1788857575"},{"product_id":"simarine-str2-radar-tank-level-sender-nmea-2000-copy","title":"Simarine STR-A Tank Adaptor – S5 Flange for STR1 \u0026 STR2","description":"\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSimarine STR-A Tank Adaptor – S5 Flange for STR1 \u0026amp; STR2\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInstall a Simarine radar tank level sender on your metal tank with the STR-A Tank Adaptor. Designed for use with both the STR1 analogue and STR2 NMEA 2000 senders, this S5 flange adaptor provides the mounting interface needed to bring radar tank monitoring to metal tank installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEnables radar measurement in metal tanks\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRadar signals cannot pass directly through metal. The STR-A fits into an S5 flange opening on the top of the tank, providing a suitable path for the sender to measure the liquid level below.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis allows you to use your chosen STR sender with a metal tank, extending its installation options beyond plastic tanks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCompatible with both STR models\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe same adaptor accommodates either the STR1 or STR2, allowing you to choose the sender that suits your onboard monitoring system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSupplied with mounting accessories\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe package includes a sealing gasket, five mounting screws and manuals to support installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eKey features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for Simarine STR1 and STR2 radar tank level senders.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnables sender installation on metal tanks.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFits an S5 flange opening on the tank top.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupplied with sealing gasket, five mounting screws and manuals.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003cspan\u003eTank level sender sold separately.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Simarine","offers":[{"title":"Default Title","offer_id":57988369613182,"sku":null,"price":26.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/7779\/5710\/files\/str-a.jpg?v=1788859118"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1008\/7779\/5710\/collections\/SimarineRadarTankLevelSender-2.jpg?v=1788857700","url":"https:\/\/boatpartsuperstore.com\/collections\/tank-senders.oembed","provider":"Boat Parts Superstore","version":"1.0","type":"link"}