Sigtronics UltraSound Intercoms


Voice activated intercom systems with 2 to 12 crew stations, and up to 4 radio transmit positions. Will interface with up to 3 mobile radios.


  • Turn on instantly when you start speaking and turn off when you stop, which eliminates constant noise pick-up through the headset microphone.
  • Interfaces to single or dual mobile radios, allowing all communications, both transmit and receive, to be heard through each headset.
  • Compatible with cellular telephones. Contact us for information on using a Bluetooth cell phone with a Sigtronics intercom system.
  • Radio transmit is accomplished by way of the headset microphone through use of a push-to-talk switch. This design allows placement of the push-to-talk switch in the most accessible location and eliminates the need to reach for the hand microphone.
  • As an added safety feature, the intercom function is automatically disabled while transmitting so that only the voice of the person transmitting goes over the air, however his voice is heard by all crew members.

Model                                              Positions                                         Transmit Positions

US-45S (single radio)                  4 (5 with pump panel)                    2 + the pump panel

US-45D (dual radio)                    4 (5 with pump panel)                    2 + the pump panel

US-67S (single radio)                  6 (7 with pump panel)                    3 + the pump panel

US-67D (dual radio)                    6 (7 with pump panel)                    3 + the pump panel

US-12S (single radio)                  Up to 12 (13 with pump panel)     4 + the pump panel

US-12D (dual radio)                    Up to 12 (13 with pump panel)     4 + the pump panel

  • Sigtronics UltraSound Intercoms

    Request a Call Back

    •  Delivery & Return


      All items are shipped via UPS unless otherwise noted. Oversized items may need to be shipped via LTL. Overnight shipping is available when requested. All shipping charges are calculated at checkout or will be added to your quote.


      You may return your stock item purchase for exchange or refund up to 30 days from date of invoice.  Prior to returning any items, please contact us for an RGA (Return Goods Authorization) number. Proof of purchase from Allstar is required for all returns. All returned goods must be in original packaging and in new and sellable condition. Custom and Special Order items are subject to the manufacturers return policy.  Some manufacturers require a re-stock fee for return which is deducted from your refund. Freight must be prepaid on all returns.


      Please contact us if you have any other questions and/or concerns. Email: Toll Free: (800) 425-5787
    •  Ask a Question

      Sigtronics UltraSound Intercoms

      Ask a Question

      View Product Information

      Versatility: Systems are available for all fire apparatus and emergency vehicles: such as 4 crew, 5 station – 6 crew, 7 station or 12 crew, 13 station intercoms. The extra station can be installed where needed (i.e. pump panel, bucket, turret.) Sigtronics can also customize systems to fit your special requirements.

      Radio Operation: Models US-45SUS-67S and US-12S are for single radio operation. Models US-45DUS-67D and US-12D are configured for dual radio operation. They have additional switches that allow you to select which radio to transmit and receive on.

      Stations: The US-45S and US-45D intercoms will accept up to four headsets. Two positions will have radio transmit capability. The US-67S and US-67D will accept up to six headsets. Three positions will have radio transmit capability. The US-12S and US-12D will accept up to twelve headsets. Four positions have radio transmit capability. Radio transmit at the pump panel is included in all the above systems.
      Extra headsets can be paralleled where crew members operate from more than one position. Additional positions may be added at platform (turntable), ladder tip (bucket) or tailboard.

      Fail Safe: The mobile radio, hand microphone and speaker will function normally with the intercom installed. The transmit keying circuit is fully isolated to provide for all radio keying configurations.

      Simple Installation: The UltraSound is small and light weight and mounts above or below the panel and adjusts for easy viewing. The intercom package comes with all the necessary mounting hardware for installation in the apparatus. Small rugged mounting boxes, (1-5/16″ x 2″ x 2″) are provided with every unit to accommodate headset jacks and push-to-talk switches. Complete and easy to follow instructions are provided along with helpful hints, operating instructions, and an 800 number for technical help.

      • Voice Activated – Turns on instantly when you start speaking and turns off when you stop. Eliminates noise pick-up through mic
      • Systems for all fire apparatus and emergency vehicles
      • Available in 4 crew, 5 station to 12 crew, 13 station models
      • Models for single or dual radio systems
      • All mounting hardware, jacks, switches and wire are included
      • 1.8″ Height x 6.1″ Width x 4.5″ Depth

      Based on 0 reviews

      0.00 Overall
      Be the first to review “Sigtronics UltraSound Intercoms”

      Your email address will not be published. Required fields are marked *


      There are no reviews yet.

      SKU: US-456712-SD Categories: , Tags: ,
      Close My Cart
      Close Wishlist
      Recently Viewed Close


      Welcome to our newly designed website!

      We are proud to announce the launch of our new website. We've been working hard to create a better, more user friendly experience for our customers.

      Please contact us for any questions you may have.

      *Our website content will continue to evolve to make sure we're always providing you with the most up-to-date information.

      Quote Cart