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 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$539.86 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$503.22 -
Groco Tank Level Sensor - 08-0004-02
$340.78 -
Dometic DTM01 Holding Tank Monitor - 313002311
$220.38 -
Raritan Holding Tank Monitor - 1510012
$708.98 -
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 -
Vetus Universal Tank Float Sensor
$218.98 - $322.58 -
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 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$226.12 - $555.00 -
Raritan TankAssure Control Panel with Sensor - 15600
$825.21 -
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 - $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 -
Maretron Tank Level Sender - TLM150-01
$364.58 -
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 -
LIST 3-Level Water Tank Monitor - TM-331111
$335.20 -
Vetus Fuel Tank Float Sensor - FSENSOR
$73.38 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$49.58 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$196.58 -
SCAD Technologies Adapter Plate - 10029
$57.98 -
SCAD Technologies Internal Tank Sensor - 10021
$102.78 -
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 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$464.72 -
Raritan TankAssure Sensor Kit - 15610
$500.40 -
Raritan TankAssure NMEA2000 Adapter - 15630
$547.98 -
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!