We offer Marine Internal Telephone,Flush type marine telephone Model: HSQ-1,6HSQ-1,8HSQ-1,12HSQ-1 Input ... Telephone,Flush type marine telephoneModel: HSQ-1,6HSQ-1,8HSQ-1,12HSQ-1Input Power: 24 Volts DCSpecificationCapacity 1/ 6/12 user Batteryless ... Bowthruster compartment etcIntegrated Communication telephoneMarine TelephonePls contact us Marine Internal Telephone,Flush type marine ...