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Siren Marine External GPS Antenna f/Siren 3 Pro Includes 10 Cable [SM-
Original price was: $39.93.$21.55Current price is: $21.55.
Sale!
![Siren Marine High Water Sensor f/Siren 3 [SM-WLS3-HIWS-917]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/siren-marine-high-water-sensor-f-siren-3-sm-wls3-hiws-917.webp)
Siren Marine High Water Sensor f/Siren 3 [SM-WLS3-HIWS-917]
Original price was: $111.27.$70.56Current price is: $70.56.
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Siren Marine Remote Cellular GPS Antenna – Threaded Mount Dome [SM-ACC
Original price was: $79.03.$47.11Current price is: $47.11.
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![Siren Marine Siren 3 Pro Vessel Management Device [SM-S3P-917]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/siren-marine-siren-3-pro-vessel-management-device-sm-s3p-917.webp)
Siren Marine Siren 3 Pro Vessel Management Device [SM-S3P-917]
Original price was: $478.12.$320.48Current price is: $320.48.
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Siren Marine SirenSat Offshore Satellite Antenna w/2M Power Cable [SM-
Original price was: $207.99.$155.28Current price is: $155.28.
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![Siren Marine Temp Sensor f/Siren 3 [SM-WLS3-TEMP-917]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/siren-marine-temp-sensor-f-siren-3-sm-wls3-temp-917.webp)
Siren Marine Temp Sensor f/Siren 3 [SM-WLS3-TEMP-917]
Original price was: $111.27.$69.65Current price is: $69.65.
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![Siren Marine Wiring Cable f/Siren 3 [SM-ACC3-WIRE]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/siren-marine-wiring-cable-f-siren-3-sm-acc3-wire.webp)
Siren Marine Wiring Cable f/Siren 3 [SM-ACC3-WIRE]
Original price was: $17.46.$10.63Current price is: $10.63.
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![T-H Marine 2-Way Boat Alarm System [TWA-1-DP]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/t-h-marine-2-way-boat-alarm-system-twa-1-dp.webp)
T-H Marine 2-Way Boat Alarm System [TWA-1-DP]
Original price was: $123.16.$93.68Current price is: $93.68.
Sale!
T-H Marine Additional Remote Control Unit f/2-Way Boat Alarm System [T
Original price was: $37.56.$28.25Current price is: $28.25.
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![T-H Marine BANSHEE Alarm Padlock [LB-TLRLCK-DP]](https://www.greathardwarehub.com/wp-content/uploads/2026/09/t-h-marine-banshee-alarm-padlock-lb-tlrlck-dp.webp)