This is our Standard wireless door/hatch contact, for use inside the vessel which is part of the GOST GOST Phantom & GOST Insight Systems. It is a Wireless Contact sensor that has a built in magnetic switch as well as a universal input that works with any of our available extension sensors below. Additionally, it has a built in anti-tamper switch for extra protection.


  • Wireless range in a typical marine environment:
    30m (100ft) with GOST GOST Phantom or
    GOST Insight that can be extended to 60m
    (200ft) with the Wireless Repeater
  • Low battery and signal transmission
  • Dimensions: 11cm x 3.2cm x 2.5cm (4.4in x 1.3in x 1in)