Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$253.03 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$331.33 -
9% offSCAD TM2 Tank Monitor for Two Tanks - 10041
$205.78$185.26 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$519.02 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$82.93 -
Dometic DTM01 Holding Tank Monitor - 313002311
$221.98 -
Groco Tank Level Sensor - 08-0004-02
$328.63 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$371.83 -
Dometic Multi-Level Tank Monitor System
$489.28 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$81.60 -
SCAD Technologies Internal Tank Sensor - 10021
$99.13 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$373.18 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$366.43 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$93.73 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$127.57 -
Maretron Tank Level Sender - TLM150-01
$371.83 -
Raritan Holding Tank Monitor - 1510012
$683.68 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$133.73 -
LIST 3-Level Waste Tank Monitor - TM-332111
$323.25 -
9% off
Blue Sea Mini OLED Tank Meter
$70.78$63.76 -
Vetus Ultrasonic Fluid Level Sensor
$238.18 - $248.98 -
Raritan Tank Sensor - Float Style - STCFL
$145.03 -
Raritan Tank Sensor Module Kit - 15101
$167.98 -
Vetus Universal Tank Float Sensor
$211.18 - $311.08 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$108.60 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$725.35 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$303.74 - $745.65 -
SCAD Technologies Adapter Plate - 10029
$55.93 -
64% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$365.08$128.17 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$209.85 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$439.33$189.60 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$211.18 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$47.83 -
Vetus Fuel Tank Float Sensor - FSENSOR
$70.78 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$484.90 - $926.81 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$448.14 -
39% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$193.65$116.43 -
Raritan TankAssure Control Panel with Sensor - 15600
$795.76 -
Raritan TankAssure Sensor Kit - 15610
$482.55 -
Raritan TankAssure NMEA2000 Adapter - 15630
$528.43
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!