Siren Marine External GPS Antenna f/Siren 3 Pro Includes 10 Cable [SM-ACC3-GPSA] Brand_Iris Innovations Same as the 5420-XT

Same as the 5420-XT

Self adhering plastic mounting plate Diameter = 75mm for secure mounting on rough surfaces

Meter senses and powers from shunt connection

10 Key Kill Switch Universal Lanyard

Groud direction and speed)

Siren Marine External GPS Antenna f/Siren 3 Pro Includes 10 Cable [SM-ACC3-GPSA] Brand_Iris Innovations Same as the 5420-XTExternal GPS Antenna for Siren 3 Pro Includes 10' Cable Optimize GPS tracking of your boat with the External GPS Antenna. When you remotely mount the External GPS Antenna, the Siren 3 Pro will override the use of the internal GPS antenna. *Compatible with the Siren 3 Pro ONLY