Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$262.38 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$213.38 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$85.98 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$315.58 -
Dometic Multi-Level Tank Monitor System
$475.18 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$539.86 -
Dometic DTM01 Holding Tank Monitor - 313002311
$220.38 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$503.22 -
SCAD Technologies Internal Tank Sensor - 10021
$102.78 -
LIST 3-Level Waste Tank Monitor - TM-332111
$332.40 -
Groco Tank Level Sensor - 08-0004-02
$340.78 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$97.18 -
Raritan Holding Tank Monitor - 1510012
$708.98 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$386.98 -
Vetus Universal Tank Float Sensor
$218.98 - $322.58 -
SCAD Technologies Adapter Plate - 10029
$57.98 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$368.78 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$76.20 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$226.12 - $555.00 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$138.66 -
Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$107.00 -
Raritan TankAssure Control Panel with Sensor - 15600
$825.21 -
Blue Sea Mini OLED Tank Meter
$73.38 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$95.08 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$379.98 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$217.60 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$91.60 -
Raritan Tank Sensor Module Kit - 15101
$174.18 -
Raritan Tank Sensor - Float Style - STCFL
$150.38 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$455.58$196.60 -
Maretron Tank Level Sender - TLM150-01
$364.58 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$378.58$175.60 -
LIST 3-Level Water Tank Monitor - TM-331111
$335.20 -
Vetus Fuel Tank Float Sensor - FSENSOR
$73.38 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$455.58$196.60 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$226.12 - $550.80 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$49.58 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$196.58 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$385.58$175.60 -
Faria Euro Black Potable Water Tank Level Gauge - 12831
$44.00 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$756.60 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$360.94 - $689.82 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$464.72 -
Groco Full Color Touchscreen LCD Monitor - 5" - LCD-5
$2,232.20 -
Raritan TankAssure Sensor Kit - 15610
$500.40 -
Raritan TankAssure NMEA2000 Adapter - 15630
$547.98 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73
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!