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 -
SCAD Technologies Internal Tank Sensor - 10021
$102.78 -
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 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$97.18 -
LIST 3-Level Waste Tank Monitor - TM-332111
$332.40 -
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 Sender - TLM150-01
$364.58 -
Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
SCAD Technologies Adapter Plate - 10029
$57.98 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$217.60 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$76.20 -
Blue Sea Mini OLED Tank Meter
$66.38 - $67.78 -
Raritan Tank Sensor - Float Style - STCFL
$150.38 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$138.66 -
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 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$91.60 -
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!