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 -
Dometic Multi-Level Tank Monitor System
$475.18 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$315.58 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$503.22 -
Raritan Holding Tank Monitor - 1510012
$708.98 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$539.86 -
Groco Tank Level Sensor - 08-0004-02
$340.78 -
Dometic DTM01 Holding Tank Monitor - 313002311
$220.38 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$368.78 -
LIST 3-Level Waste Tank Monitor - TM-332111
$332.40 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$97.18 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$386.98 -
Vetus Universal Tank Float Sensor
$218.98 - $322.58 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$118.20 -
Raritan Tank Sensor Module Kit - 15101
$174.18 -
Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$217.60 -
SCAD Technologies Adapter Plate - 10029
$57.98 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$95.08 -
Maretron Tank Level Sender - TLM150-01
$364.58 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$76.20 -
Blue Sea Mini OLED Tank Meter
$66.38 - $67.78 -
Raritan TankAssure Control Panel with Sensor - 15600
$825.21 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$379.98 -
Raritan Tank Sensor - Float Style - STCFL
$150.38 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$138.66 -
Vetus Fuel Tank Float Sensor - FSENSOR
$73.38 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$455.58$196.60 -
LIST 3-Level Water Tank Monitor - TM-331111
$335.20 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$196.58 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$378.58$175.60 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$455.58$196.60 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$49.58 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$91.60 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$226.12 - $555.00 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$360.94 - $689.82 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$464.72 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$385.58$175.60 -
Raritan TankAssure Sensor Kit - 15610
$500.40 -
Raritan TankAssure NMEA2000 Adapter - 15630
$547.98
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!