Welcome to Defender Canada! 
Tank Monitors
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SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$253.03 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$205.78 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$304.33 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$519.02 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$82.93 -
Groco Tank Level Sensor - 08-0004-02
$328.63 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$574.44 -
Dometic Multi-Level Tank Monitor System
$489.28 -
Dometic DTM01 Holding Tank Monitor - 313002311
$221.98 -
SCAD Technologies Internal Tank Sensor - 10021
$99.13 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$398.83 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$93.73 -
Raritan Holding Tank Monitor - 1510012
$683.68 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$103.20 -
Maretron Tank Level Sender - TLM150-01
$351.58 -
Vetus Universal Tank Float Sensor
$211.18 - $311.08 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$73.50 -
LIST 3-Level Waste Tank Monitor - TM-332111
$320.55 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$373.18 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$365.08$169.35 -
Vetus Ultrasonic Fluid Level Sensor
$238.18 - $248.98 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$240.68 - $590.61 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$133.73 -
Raritan Tank Sensor Module Kit - 15101
$167.98 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$366.43 -
Raritan Tank Sensor - Float Style - STCFL
$145.03 -
Blue Sea Mini OLED Tank Meter
$70.78 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$101.20 -
Raritan TankAssure Control Panel with Sensor - 15600
$795.76 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$209.85 -
Vetus Fuel Tank Float Sensor - FSENSOR
$70.78 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$439.33$189.60 -
LIST 3-Level Water Tank Monitor - TM-331111
$323.25 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$439.33$189.60 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$118.05 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$47.83 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$189.58 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$371.83$169.35 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$384.05 - $734.11 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$448.14 -
Raritan TankAssure Sensor Kit - 15610
$482.55 -
Raritan TankAssure NMEA2000 Adapter - 15630
$528.43 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$193.65$126.08
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!