Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$254.50 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$530.54 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$203.44 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$84.76 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$321.78 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$361.11 -
Dometic DTM01 Holding Tank Monitor - 313002311
$226.90 -
Groco Tank Level Sensor - 08-0004-02
$342.82 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$741.45 -
Dometic Multi-Level Tank Monitor System
$500.14 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$310.48 - $762.20 -
Vetus Universal Tank Float Sensor
$215.86 - $317.98 -
Vetus Ultrasonic Fluid Level Sensor
$243.46 - $254.50 -
9% offBlue Sea Systems M2 OLED Digital Tank Monitor - 1839
$381.46$343.38 -
SCAD Technologies Internal Tank Sensor - 10021
$102.70 -
LIST 3-Level Waste Tank Monitor - TM-332111
$330.42 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$79.26 -
Raritan Tank Sensor Module Kit - 15101
$171.70 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$130.39 -
Raritan Tank Sensor - Float Style - STCFL
$146.86 -
9% off
Blue Sea Mini OLED Tank Meter
$72.34$65.17 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$112.04 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$105.46 -
Maretron Tank Level Sender - TLM150-01
$361.11 -
SCAD Technologies Adapter Plate - 10029
$53.02 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$136.69 -
Raritan Holding Tank Monitor - 1510012
$698.86 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$374.56 -
64% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$373.18$131.01 -
LIST 3-Level Water Tank Monitor - TM-331111
$330.42 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$214.50 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$449.08$193.80 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$190.68 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$124.80 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$310.48 - $749.94 -
Vetus Fuel Tank Float Sensor - FSENSOR
$72.34 -
Groco Full Color Touchscreen LCD Monitor - 5" - LCD-5
$2,230.68 -
Faria Euro Black Potable Water Tank Level Gauge - 12831
$43.38 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$1,148.76 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$495.66 - $947.39 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$458.09 -
14% offRaritan TankAssure Control Panel with Sensor - 15600
$813.43$691.51 -
Raritan TankAssure Sensor Kit - 15610
$493.26 -
Raritan TankAssure NMEA2000 Adapter - 15630
$540.16 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$48.88 -
Groco Tank Level Sensor Assembly - 450 ASSY
$447.70 -
39% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$197.94$119.00
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!