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 -
Groco Tank Level Sensor - 08-0004-02
$340.78 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$539.86 -
Dometic DTM01 Holding Tank Monitor - 313002311
$220.38 -
Raritan Holding Tank Monitor - 1510012
$708.98 -
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 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$118.20 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$368.78 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$138.66 -
Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$217.60 -
Maretron Tank Level Sender - TLM150-01
$364.58 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$76.20 -
Raritan TankAssure Control Panel with Sensor - 15600
$825.21 -
Blue Sea Mini OLED Tank Meter
$66.38 - $67.78 -
Raritan Tank Sensor - Float Style - STCFL
$150.38 -
Raritan Tank Sensor Module Kit - 15101
$174.18 -
LIST 3-Level Water Tank Monitor - TM-331111
$335.20 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$455.58$196.60 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$196.58 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$378.58$175.60 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$455.58$196.60 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$360.94 - $689.82 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$385.58$175.60
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!