Welcome to Defender Canada! 
New Arrivals
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Siren Marine Wireless Battery Sensor for Siren 3 - SM-WLS3-BATT-917
$203.67 -
Siren Marine Wireless Entry Sensor for Siren 3 - SM-WLS3-ENTR-917
$203.67 -
Siren Marine External GPS Antenna for Siren 3 Pro - SM-ACC3-GPSA
$73.47 -
Siren Marine Wireless High-Water Sensor for Siren 3 - SM-WLS3-HIWS-917
$203.67 -
Siren Marine Siren 3 Pro Vessel Management Device - SM-S3P-917
$1,164.03 -
Siren Marine Remote Cellular & GPS Puck Antenna - SM-ACC3-RCGA-PUCK
$144.83 -
Siren Marine Remote Cellular & GPS Dome Antenna - SM-ACC3-RCGA-DOME
$144.83 -
Siren Marine Audible Alarm - SM-ACC-ALRM
$81.06 -
Siren Marine Wireless Bilge Pump Sensor for Siren 3 - SM-WLS3-BILG-917
$203.67 -
Siren Marine NMEA 2000 Connection Kit for Siren 3 - SM-ACC3-N2KCT
$56.76 -
Siren Marine PAM4 Wired DC Relay - SM-ACC-DCRE
$41.58 -
Siren Marine SirenSat Offshore Satellite Antenna - SM-SAT-OFFS
$380.18 -
Siren Marine Wireless Temperature Sensor for Siren 3 - SM-WLS3-TEMP-917
$203.67 -
Siren Marine Wired Canvas Snap Cover Sensor - SM-ACC-SNAP
$56.76 -
Siren Marine Wired Infrared Motion Sensor - SM-ACC-INFR
$197.98 -
Siren Marine Wired Magnetic REED Switch - SM-ACC-REED
$27.43 -
Siren Marine Wired Micro ePIR Motion Sensor - SM-ACC-EPIR
$213.16 -
Siren Marine Wired Shore Power Sensor Plug - SM-ACC-SHOR
$106.87 -
Siren Marine Wiring Cable 2 for Siren 3 Pro - SM-ACC3-WIRE
$32.47 -
Siren Marine Shore Power Relay
$102.32 - $149.39 -
Optronics 5-Way Wishbone Style Trailer Wiring Harness - A255WH3
$32.70 -
Optronics 5-Way Wishbone Style Trailer Wiring Harness - A25W5BP
$24.73 -
Optronics 4-Way Wishbone Style Wiring Harness with Trunk Connector - A25WH
$28.32 -
Optronics 4-Way Flat Trunk Connector - A48TC
$12.42 -
Optronics 7-Round to 5-Flat Trailer Adapter - A57CCS
$44.38 -
Optronics 7-Way Round Trailer Adapter - A57WBP
$18.07 -
Optronics 5-Flat to 7-Round Trailer Adapter - A57WH
$22.79 -
Optronics Clear LED Trailer Back Up Light - BUL10CBP
$44.38 -
Optronics DL16 Series Docking Trailer Light Kit - DL16CC
$47.32 -
Optronics Heavy Duty Plastic License Plate Bracket - LP10SBP
$3.96 -
Optronics Stainless Steel License Plate Bracket - LP15SBP
$7.02 -
Optronics Powder Coated Steel License Plate Bracket - LP20SB
$3.36 -
Optronics MC93 Series Sealed Identification Trailer Light Bar - MC93RK
$18.29 -
Optronics MC97 Series Identification Trailer Light Bar - MC97RK
$24.02 -
Optronics Stud Mount Marker/Clearance Trailer Light with Reflex - MCL36AS
$18.69 -
Optronics Sealed LED Identification Trailer Light Bar - MCL93RBP
$47.01 -
Optronics Sealed Stainless Steel LED Identification Trailer Light Bar - MCL97RK
$47.30 -
Optronics Flush-Mount Trailer Tail Light Kit - ST45RK
$21.17 -
Optronics Round Sealed Trailer Light - ST45RS
$14.06 -
Optronics Submersible Universal Mount Combination Trailer Tail Light - ST5RBP
$14.56 -
Optronics Sealed Oval Trailer Light Kit - ST70RK
$16.06 -
Optronics Sealed Oval Trailer Light - ST70RS
$13.24 -
Optronics ONE Sealed LED Stop/Turn/Tail Trailer Light - STL002RBP
$19.75 -
Optronics Fleet Count Waterproof LED Oval Stop/Turn/Tail Trailer Light - STL12RBP
$19.37 -
Optronics Oval Sealed LED Parking/Turn Signal Trailer Light - STL72ABP
$23.96 -
Optronics Oval Sealed LED Stop/Turn Signal Trailer Light Kit - STL74RKBP
$27.64 -
Optronics Deluxe Waterproof Universal Mount Combination Trailer Tail Light Kit - TL16RK
$60.47 -
Optronics Submersible Trailer Light Set - TL60RK
$29.03