Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$273.60 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$222.50 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$318.86 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$89.64 -
Groco Tank Level Sensor - 08-0004-02
$355.36 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$562.98 -
Raritan Holding Tank Monitor - 1510012
$739.34 -
Dometic Multi-Level Tank Monitor System
$495.52 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$101.32 -
SCAD Technologies Internal Tank Sensor - 10021
$107.16 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$372.88 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$403.54 -
19% offLIST 3-Level Waste Tank Monitor - TM-332111
$346.62$277.42 -
Vetus Universal Tank Float Sensor
$228.34 - $336.38 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$223.98 -
Blue Sea Mini OLED Tank Meter
$69.20 - $70.66 -
Maretron Tank Level Sender - TLM150-01
$365.58 -
LIST 3-Level Water Tank Monitor - TM-331111
$346.62 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$105.72 -
Raritan Tank Sensor - Float Style - STCFL
$156.80 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$76.52 -
Raritan TankAssure Control Panel with Sensor - 15600
$860.55 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$396.24 -
SCAD Technologies Adapter Plate - 10029
$60.44 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$144.57 -
Raritan Tank Sensor Module Kit - 15101
$181.62 -
Vetus Ultrasonic Fluid Level Sensor
$257.54 - $269.22 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$524.76 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$235.79 - $574.38 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$99.13 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$51.68 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$394.78$183.10 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$475.08$205.00 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$209.38$136.30 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$177.24 -
Dometic DTM01 Holding Tank Monitor - 313002311
$229.80 -
Vetus Fuel Tank Float Sensor - FSENSOR
$76.50 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$235.79 - $578.76 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$376.39 - $719.36 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$484.61 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$789.00 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$93.89 -
Faria Euro Black Potable Water Tank Level Gauge - 12831
$45.86 -
Groco Full Color Touchscreen LCD Monitor - 5" - LCD-5
$2,186.22 -
Raritan TankAssure Sensor Kit - 15610
$521.82 -
Raritan TankAssure NMEA2000 Adapter - 15630
$571.44 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$475.08$205.00 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$402.08$183.10
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!