Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$253.03 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$331.33 -
9% offSCAD TM2 Tank Monitor for Two Tanks - 10041
$205.78$185.26 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$519.02 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$82.93 -
Dometic DTM01 Holding Tank Monitor - 313002311
$221.98 -
Groco Tank Level Sensor - 08-0004-02
$328.63 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$371.83 -
Dometic Multi-Level Tank Monitor System
$489.28 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$81.60 -
SCAD Technologies Internal Tank Sensor - 10021
$99.13 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$373.18 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$366.43 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$93.73 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$127.57 -
Raritan Holding Tank Monitor - 1510012
$683.68 -
Maretron Tank Level Sender - TLM150-01
$371.83 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$133.73 -
LIST 3-Level Waste Tank Monitor - TM-332111
$323.25 -
9% off
Blue Sea Mini OLED Tank Meter
$70.78$63.76 -
Vetus Ultrasonic Fluid Level Sensor
$238.18 - $248.98 -
Raritan Tank Sensor Module Kit - 15101
$167.98 -
Raritan Tank Sensor - Float Style - STCFL
$145.03 -
Vetus Universal Tank Float Sensor
$211.18 - $311.08 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$108.60 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$725.35 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$303.74 - $745.65 -
SCAD Technologies Adapter Plate - 10029
$55.93 -
64% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$365.08$128.17 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$209.85 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$439.33$189.60 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$439.33$189.60 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$122.10 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$303.74 - $733.65 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$47.83 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$211.18 -
LIST 3-Level Water Tank Monitor - TM-331111
$323.25 -
Vetus Fuel Tank Float Sensor - FSENSOR
$70.78 -
Groco Full Color Touchscreen LCD Monitor - 5" - LCD-5
$2,152.50 -
Faria Euro Black Potable Water Tank Level Gauge - 12831
$42.45 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$1,123.80 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$484.90 - $926.81 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$448.14 -
Raritan TankAssure Control Panel with Sensor - 15600
$795.76 -
Raritan TankAssure Sensor Kit - 15610
$482.55 -
Raritan TankAssure NMEA2000 Adapter - 15630
$528.43 -
39% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$193.65$116.43 -
Groco Tank Level Sensor Assembly - 450 ASSY
$429.88
About Tank Monitors
Tank Monitors
Monitoring water tank levels can be tricky and gauges are essential on boats. Some tanks must stay full while other tanks need to be bled as the gauge creeps up. A wide variety of single level gauges available at Defender are designed to monitor water tank levels in individual tanks. LED panel marine tank monitor systems and sensors do the same thing in multiples. Monitors basically offer one base for keeping an eye on all your tanks at the flip of a switch - even at night!