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