Welcome to Defender Canada! 
Tank Monitors
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Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
Vetus Inspection Lid
$25.80 - $92.98 -
Vetus Diesel Inspection Lid - ILT120B
$126.60 -
Vetus Fuel Tank Float Sensor - FSENSOR
$73.38 -
Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender
$160.18 - $161.58 -
Vetus Universal Tank Float Sensor
$218.98 - $322.58 -
Veratron Fresh Water Level Sensor with Sealing Kit #370
$226.12 - $555.00 -
Veratron Fresh Water Level Sensor with Sealing Kit #930
$226.12 - $550.80 -
Veratron Waste Water Level Sensor with Sealing Kit #930
$360.94 - $689.82 -
Veratron Level Sensor Single Station with Seal Kit - 226-801-015-001G
$95.08 -
Veratron Marine NMEA 2000 Liquid Level Sensor - B00041501
$689.82 -
Dometic Multi-Level Tank Monitor System
$475.18 -
Dometic DTM04 TankWatch 4-Level Tank Monitor System
$487.82 -
Veratron VDO Fresh Water Level Sender - 226-828-001-001K
$539.86 -
SCAD Technologies External Tape-On Tank Sensor - 10022
$85.98 -
SCAD Technologies Internal Tank Sensor - 10021
$102.78 -
SCAD TM1 Tank Monitor with External Sensor Strip - 10040
$262.38 -
SCAD TM2 Tank Monitor for Two Tanks - 10041
$213.38 -
Raritan Tank Sensor - Float Style - STCFL
$150.38 -
Raritan Tank Sensor - Stick-On Style - STCTSA
$97.18 -
9% offLIST 3-Level Waste Tank Monitor - TM-332111
$332.40$299.22 -
19% offLIST 3-Level Water Tank Monitor - TM-331111
$332.40$266.04 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$214.80 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73 -
Groco Tank Level Sensor - 08-0004-02
$455.58 -
Groco Tank Level Sensor Assembly - 450 ASSY
$465.38 -
Dometic DTM01 Holding Tank Monitor - 313002311
$220.38 -
Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$386.98 -
Blue Sea Mini OLED Tank Meter
$66.38 - $67.78
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!