Simarine STR2 Radar Tank Level Sender – NMEA 2000
Simarine STR2 Radar Tank Level Sender – NMEA 2000
Simarine STR2 Radar Tank Level Sender – NMEA 2000
Monitor 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.
Suitable 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.
Tank information on your existing displays
The 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.
Bluetooth connectivity also lets you monitor tank levels through the Simarine Connect app, giving you convenient access without a dedicated Simarine display.
Compact design with straightforward installation
The 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.
At 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.
For suitable replacement installations, the old sender can remain in place after being disconnected, reducing the work involved in upgrading your tank monitoring.
Wireless setup tailored to your tank
Configure 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.
Approximately 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.
Key features
- Non-contact radar measurement for tank heights of 150–2,000 mm.
- NMEA 2000 connectivity using Fluid Level PGN 127505.
- Works with compatible displays supporting the relevant fluid type and message.
- Bluetooth monitoring, setup, calibration and firmware updates.
- Suitable for fresh water, grey water, black water, diesel and petrol.
- Approximately 7 mm resolution.
- Up to 100 calibration points for irregularly shaped tanks.
- Built-in slosh filtering for more stable readings.
- No moving parts or submerged probes.
- Peel-and-stick mounting on suitable plastic and GRP tank tops.
- Optional S5 adapter for metal tanks, available separately.
- Compact housing: approximately 32.5 mm high × 62 mm diameter.
- 8–35 V DC operating supply.
- Designed and manufactured in Slovenia.
- Three-year warranty.
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