Welcome to Defender Canada! 
Tank Monitors
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Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$304.33 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$519.02 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$574.44 -
Dometic Multi-Level Tank Monitor System
$489.28 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$373.18 -
Raritan Holding Tank Monitor - 1510012
$683.68 -
Dometic DTM01 Holding Tank Monitor - 313002311
$221.98 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$93.73 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$78.90 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$377.23 -
LIST 3-Level Waste Tank Monitor - TM-332111
$320.55 -
Raritan Tank Sensor Module Kit - 15101
$167.98 -
SCAD Technologies Internal Tank Sensor - 10021
$99.13 -
Maretron Tank Level Sender - TLM150-01
$373.18 -
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 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$101.20 -
Blue Sea Mini OLED Tank Meter
$70.78 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$93.75 -
Vetus Universal Tank Float Sensor
$211.18 - $311.08 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$366.43 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$209.85 -
64% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$365.08$128.17 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$439.33$189.60 -
Raritan Tank Sensor - Float Style - STCFL
$145.03 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$439.33$189.60 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$47.83 -
Vetus Fuel Tank Float Sensor - FSENSOR
$70.78 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$182.83 -
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 Control Panel with Sensor - 15600
$795.76 -
Raritan TankAssure Sensor Kit - 15610
$482.55 -
Raritan TankAssure NMEA2000 Adapter - 15630
$528.43 -
39% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$193.65$116.43
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!