Welcome to Defender Canada! 
Tank Monitors
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Raritan TankAssure Control Panel with Sensor - 15600
$860.55 -
Raritan Holding Tank Monitor - 1510012
$739.34 -
Raritan TankAssure NMEA2000 Adapter - 15630
$571.44 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$562.98 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$524.76 -
Raritan TankAssure Sensor Kit - 15610
$521.82 -
Dometic Multi-Level Tank Monitor System
$495.52 -
Victron Energy VE.Can Resistive Tank Sender Adapter - BPP900600100
$484.61 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$403.54 -
Raritan Holding Tank Monitor Indicator Panel - 1520012
$396.24 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$384.56 -
Maretron Tank Level Sender - TLM150-01
$380.18 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$376.39 - $719.36 -
Groco Tank Level Sensor - 08-0004-02
$355.36 -
LIST 3-Level Water Tank Monitor - TM-331111
$349.54 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$329.08 -
19% offLIST 3-Level Waste Tank Monitor - TM-332111
$346.62$277.42 -
SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$273.60 -
Vetus Ultrasonic Fluid Level Sensor
$257.54 - $269.22 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$235.79 - $578.76 -
Dometic DTM01 Holding Tank Monitor - 313002311
$229.80 -
Vetus Universal Tank Float Sensor
$228.34 - $336.38 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$226.90 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$222.50 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$475.08$205.00 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$475.08$205.00 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$204.98 -
54% offOceanic Systems Panel-Mounted Holding Tank Pumpout Gauge - 3350-HTPO
$402.08$183.10 -
53% offOceanic Systems 4-20mA Tank Level Adaptor - 4291
$394.78$183.10 -
Raritan Tank Sensor Module Kit - 15101
$181.62 -
Raritan Tank Sensor - Float Style - STCFL
$156.80 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$144.57 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$209.38$136.30 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$123.24 -
SCAD Technologies Internal Tank Sensor - 10021
$107.16 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$101.32 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$99.13 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$95.50 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$89.64 -
Maretron TFT-5H-Focus Tube Kit - TFT-5H
$79.44 -
Vetus Fuel Tank Float Sensor - FSENSOR
$76.50 -
Blue Sea Mini OLED Tank Meter
$70.66 -
SCAD Technologies Adapter Plate - 10029
$60.44 -
Raritan Tank Monitor Indicator Panel Wire Harness - 152WH
$51.68
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!