Welcome to Defender Canada! 
Tank Monitors
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Blue Sea Systems M2 OLED Digital Tank Monitor - 1839
$386.98 -
Vetus Ultrasonic Fluid Level Sensor
$246.98 - $258.18 -
9% offLIST 3-Level Waste Tank Monitor - TM-332111
$332.40$299.22 -
Blue Sea Systems VSM 422 Vessel Systems Monitor Tank Sender
$160.18 - $161.58 -
Vetus Inspection Lid
$25.80 - $92.98 -
Blue Sea Mini OLED Tank Meter
$66.38 - $67.78 -
Vetus Diesel Inspection Lid - ILT120B
$126.60 -
LIST Single-Level Waste Tank Alarm - 3/4 Alert - TM-132111
$214.80 -
Vetus Universal Tank Float Sensor
$218.98 - $322.58 -
34% offLIST Single-Level Water Tank Alarm - 1/4 Alert - TM-131111
$200.80$130.73 -
Vetus Fuel Tank Float Sensor - FSENSOR
$73.38 -
19% offLIST 3-Level Water Tank Monitor - TM-331111
$332.40$266.04
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!