Welcome to Defender Canada! 
Tank Monitors
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SCAD Technologies Adapter Plate - 10029
$60.44 -
Blue Sea Mini OLED Tank Meter
$70.66 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$89.64 -
Veratron OceanLink Fresh Water Gauge - 52 mm (2 1/16")
$95.50 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$99.13 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$101.32 -
SCAD Technologies Internal Tank Sensor - 10021
$107.16 -
Maretron SAE 5-Bolt Pattern Focus Tube - TFTDBE-5H
$123.24 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$209.38$136.30 -
Victron Energy GX Tank 140 System Monitoring - BPP920140100
$144.57 -
Raritan Tank Sensor - Float Style - STCFL
$156.80 -
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 -
Maretron NMEA 2000 Tank Temperature Immersion Probe - TP-IP-1
$204.98 -
56% offOceanic Systems Deck-Mounted Water Gauge - 5250-W
$475.08$205.00 -
56% offOceanic Systems Submersible Hydrostatic Sensor
$475.08$205.00 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$222.50 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$226.90 -
Dometic DTM01 Holding Tank Monitor - 313002311
$229.80 -
SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$273.60 -
19% offLIST 3-Level Waste Tank Monitor - TM-332111
$346.62$277.42 -
Maretron NMEA 2000 Tank Level Monitor - TLM100-01
$329.08 -
LIST 3-Level Water Tank Monitor - TM-331111
$349.54 -
Groco Tank Level Sensor - 08-0004-02
$355.36 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$376.39 - $719.36 -
Maretron Tank Level Sender - TLM150-01
$380.18 -
Maretron Tank Level NMEA 2000 Adapter - TLA100-01
$384.56 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$403.54 -
Dometic Multi-Level Tank Monitor System
$495.52 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$524.76 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$562.98 -
Raritan Holding Tank Monitor - 1510012
$739.34
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!