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Ritron 4-Mile MURS Indoor Call Box

Item #RI1001
Current Stock:
  • Perfect for emergency call boxes, campuses, and hotels.

  • Heavy-duty commercial-grade material, assembled in the USA.

  • Perfect addition to a commercial application of our MURS intercoms and hand-held radios.

  • Simple operation, to limit user control, but does have programmable features, such as programming channels.

  • Special Shipping Note: This item is built to order and generally ships in 2-3 weeks.


 More about the Indoor Call Box from Ritron

This Indoor Intercom Call Box is best suited for large work locations where users do not have the option to carry radios or where you may only need a simple intercom to call a main station. Great for emergency communication as well as everyday use, the long range of this system makes it a good choice for communication on construction sites, business lots, golf courses, hotels/motels, campuses, hospitals, farms, and warehouses. Although this intercom is not weatherproof, it can be used outside in a well-covered area.

It is recommended that the entire antenna connection be protected with sealing tape. This will help waterproof the unit, and keep exposure from voiding the manufacturer'’s warranty. Sealing tape can be found at most hardware or electrical supply stores. This system uses the MURS (Multi-Use Radio Service) wireless frequencies, resulting in an amazing communication range of up to four miles!* Superb wireless communication between remote locations is now possible! The indoor intercom call box runs on 6 D batteries. Alternatively, it can be plugged in using a 12V power adapter (not included). The choice is yours!

This system has two communication modes. The first is an energy saver mode that activates the intercom when someone makes a call by pressing the Talk button. In this mode, the unit will turn itself off after a programmed amount of inactivity (up to 4 minutes). The second mode allows other MURS intercoms to communicate with the call box without this box initiating the communication. The second mode does use more power, so it is suggested that you connect the call box directly to a power source. Our call box is fully compatible with all of our MURS radios, including our base stations and hand-held radio walkie-talkies. When a user presses the Talk button, all intercom stations on the same channel are paged and any station can respond.

Please note: The Indoor Call Box cannot be used by itself, but is sold separately as one single unit. It must be used in conjunction with either our base stations or hand-held radio walkie-talkies. We do sell individual intercom bases for each of these systems in the drop-down menu above.

Product note: This item is not pre-programmed for our MURS Base Stations or MURS Hand-held Radios. Although they may operate on channel 4 or 5, you may need to program the units together upon arrival. This item is pre-programmed for our Commercial Base Stations and Commercial Hand-held Radios, which may be purchased separately. Authorized by the FCC, MURS is a license-free service that allows the user to transmit voice and data. MURS also allows a maximum of 2 watts of output power which means greater range than other license-free radio services.

* Although line-of-sight is not required, the maximum range is based on optimal conditions with minimal interference. Wireless range is affected by objects such as walls, trees, etc. Actual range may vary, depending on environment.

  • Range: Maximum of 4-mile
  • Channels: Programmable
  • Weather: Intended for indoor use
  • Modes: push to talk, long range communication, in commercial setting. Communicates to all intercoms on the same channel. Two power saving mode options- automatic turn off, or interval sleep
  • Sounds: Adjustable volume and gain
  • Compatibility: with MURS hand-held radios and base stations.
  • Mounting: Mounts on post or wall with mounting hardware (brackets and/or screws)
  • Expandability: can communicate with an unlimited number of MURS base stations and hand-held radios and can support any number of call boxes
  • Other: Busy signal to prevent disrupting a channel in use. PC programmable.
  • Frequency: 150-165 MHz
  • Warranty: 1 year manufacturer warranty and tech support
  • Power: 6 D batteries (low battery alert) or a 12V DC transformer (power failure alert)
  • Dimensions: 7" x 5" x 3"
  • Includes: 1- indoor callbox and 1- antenna

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  1. From Orlando, FL 4 Star Review

    Posted by on 31st Jul 2014

    Great addition to an already fantastic system! I was waiting for them to come out with a call box solution for the MURS system and it is great!