Maretron TLM100 Ultrasonic Tank Level Monitor

The Maretron TLM100 senses tank levels using ultrasonic technology and sends them over NMEA 2000. It reads tanks up to 40 inches (1.02 meters) deep. It works with diesel, fresh water, gray water, black water and oil tanks.

Unlike most senders, it can be calibrated for irregular tank shapes, so the reading reflects the true level. It mounts on an SAE J1810 5-hole pattern or on 1.5 inch NPT or 1.25 inch BSP openings with adapters. An optional airlock keeps the sensor face clean in black water tanks.

An optional focus tube allows accurate readings on planing hulls that run bow-up. The TLM100 is NMEA 2000 certified and a key part of Maretron's N2KView monitoring system. Check the available mounting space and surrounding hardware before installation so a correct part number does not turn into a clearance problem. Browse more marine networking.

• Ultrasonic tank level sensing
• Calibrates for irregular tank shapes
• Reads tanks up to 40 inches deep
• NMEA 2000 certified