Shopping from Canada? 
Go to Defender Canada!
Monitors & Meters
-
Blue Sea Systems DC Shunt Shifter - 8242
$78.99 -
Blue Sea Systems AC Current Transformer - 8256
$24.99 -
Victron Energy BMV Monitor Replacement Shunt
$22.10 -
Blue Sea Systems Battery Temperature Sensor - 1820
$20.99 -
Balmar SmartLink Add-on SG200 Battery Monitor Color Display - SG2-0200
$128.00 -
Vesper External SmartAIS Alarm and Mute Switch Kit - 010-13274-10
$52.99 -
Victron Energy GX Touch 70 Protection Cover - BPP900462070
$18.95 -
Victron Energy CCGX Wi-Fi Module Simple Nano USB - BPP900100200
$31.99 -
Aqualarm Engine Overheat Detector - 212A - 20118
$27.99 -
Blue Sea Systems AC Analog Ammeter - 8258
$59.99 -
Blue Sea Systems M2 AC Ammeter - 1836
$263.99 -
Victron Energy GX Touch 50 Protection Cover - BPP900462050
$18.86 -
Victron Energy Battery Alarm GX - BPA000100010R
$63.75 -
Victron Energy BMV/MPPT Control Wall Surface Mount - ASS050500000
$22.95 -
Victron Energy GX Touch 50 Adapter for CCGX Cut-Out - BPP900460050
$24.65 -
Victron Energy GX Touch 70 Wall Mount - BPP900465070
$20.40 -
Maretron AC Electrical Current Transducer with Cable - M000630
$83.99 -
Maretron Battery Voltage Sense/Power Cable - FC01
$47.99 -
Maretron NMEA 2000 AC Monitor - ACM100-01
$445.99 -
Maretron NMEA 2000 DC Monitor - DCM100-01
$542.99 -
Maretron Ring/Under Bolt Temperature Probe Sensor - TR3K
$39.99 -
Blue Sea Systems Micro Analog AC Ammeter with Coil - 8246
$67.99 -
15% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Blue Sea Systems Analog/Digital Meter Mounting Panel - 1475
MSRP: $59.99$50.99 -
12% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Blue Sea Systems AC Current Transformer - 1829
MSRP: $34.99$30.79 -
Victron Energy Color Control GX & MPPT Control Wall Mount Enclosure - ASS050600000
$39.99 -
Victron Energy Smart BMS CL 12/100 to MultiPlus Cable - ASS070200100
$17.00 -
Victron Energy GX Touch 50 Wall Mount - BPP900465050
$15.30 -
25% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Xantrex Battery Monitor Connection Kit - 854-2021-01
MSRP: $122.99$92.24 -
Xantrex LinkPRO Battery Monitor - 84-2031-00
$274.99 -
10% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Xantrex Temperature Sensor Kit - 854-2022-01
MSRP: $63.99$57.59 -
74% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Oceanic Systems 3412 DC Current Transformer 0-200A
MSRP: $64.99$16.25 -
15% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Maretron Direct Current Relay Module - DCR100-01
MSRP: $395.99$336.59 -
15% off MSRPMSRP (Manufacturer's Suggested Retail Price)Set by the manufacturer and displayed for comparison purposes only.
Aqualarm Low Battery Monitor with Detector - 20291
MSRP: $56.99$48.44 -
Blue Sea Systems AC Current Transformer - 8073
$24.99 -
Blue Sea Systems AC Digital Frequency Meter - 8239
$202.99 -
Blue Sea Systems AC Current Transformer - 8257
$26.99 -
Blue Sea Systems DC Analog Ammeter with Shunt
$80.99 -
Victron Energy Current Transformer
$33.15 - $66.30 -
Newmar UV Stabilized DC Energy Monitor - DCE-VAH
$854.99 -
Newmar Panel Analog Ammeter
$177.99 -
Skyhawk Oversea Battery Sensor - SHBTYG1
$69.99 -
Samlex Dual Battery Monitor - BW-03
$108.70
Previous2 / 2