The UHF Callbox XT Outdoor Intercom with Gate Relay works with other UHF radios in the 456 450-470Mhz frequency range and it provides long range, 2-way voice communication from the fixed location of the Callbox to any of your other radios. It has a range of up to one mile or more with an optional external antenna.

This heavy duty outdoor intercom is designed for construction sites, golf courses, hotels/motels, airport parking lots, gated entrances, manufacturing, college campuses, hospitals, receiving docks, amusement parks, resorts, locked entrances, farms, ranches, warehouses, campgrounds, parking lots, delivery doors, and any other application that needs two way communication for safety or convenience.

There is no need for extensive wiring, trenching, remodeling, or installing dedicated phone lines with expensive monthly fees since the Callbox is completely wireless.

For simple installation, the Callbox is designed to operate on 6 D-cell batteries (alkaline or Ni-Cad rechargeable). An optional external power supply is also available.

The Callbox has two modes of power consumption. In Automatic Turn-Off the unit turns itself off after a programmed amount of inactivity (up to 4 minutes). It can only be turned on again by pressing its Call button on the Callbox. In this mode it cannot receive calls from other intercom or handheld radio units. It can only make calls and then other units can respond.

In Normal mode, the unit does not turn itself off and the Callbox can not only make calls, but receive them as well. This mode consumes the largest amount of power and should only be considered if an external source of power is available. If an external source of power is used, the internal batteries can be installed as a back-up against loss of

If you use the CallBox Outdoor Intercom with Gate Relay along with a radio that can send a 2-Tone encode signal then the Callbox can be used to remotely control gates or magnetic door locks. The Callbox has a single 1-Amp switch output that can be activated when the Callbox receives a unique 2-Tone encode signal that the radio sends.

The Callbox with Gate Relay can also operate as a motion, gate entry, tamper or vehicle detection device. It will send a tone alert when optional switch/sensor status changes. The Callbox will send a warning tone when a change in the Sensor Input is detected. The Sensor Input will respond to an OPEN or CLOSED switch.

The Callbox is housed in a fiberglass enclosure with a stainless steel faceplate that includes tamper-resistant fasteners and a concealed antenna making it perfect to withstand harsh elements.

This Callbox has also is equipped to use pre-recorded voice messages that notify other intercoms and two-way radios when specific events occur. These voice messages are recorded and stored on the Callbox, and automatically played back when the associated event occurs.

There can be a total of 5 event messages as follows:

• Greeting Message: This message plays when a user presses the Talk button on the Callbox. You can use it to record instructions for the user to follow such as " Welcome to our facility. An attendant will be with you shortly. "
• Identification (ID) Message: The ID message is transmitted automatically when the Talk button is first pressed. This message identifies which Callbox has been activated. A typical message might be, " South delivery entrance" or "Main Gate." The message will be retransmitted every time the Callbox is pressed until it is answered. If the Greeting Message is used, the ID message is transmitted after the greeting is played. The ID message can be periodically until the Callbox is answered. It is also sent ahead ahead of a Sensor Detect or Low Battery/Power Fail messages.
• Low Battery/Power Fail Message: This message is automatically transmitted when low voltage is detected on the Callbox. The message may say something like " Power failure" or " Low Battery." The ID Message is sent immediately before this message.
• Sensor Detect On Message:This message is automatically transmitted when a switch attached to the Sensor Input is closed. A typical message may be something like, " Door opened," "Motion detected," or " Vehicle present." The ID Message is sent immediately before this message. A typical message may be something like, " Main Gate," Vehicle present."
• Sensor Detect Off Message: This message is automatically transmitted when a switch attached to the Sensor Input is opened. A typical message may be something like, " Door opened," "Motion detected ," or "Vehicle present." The ID Message is sent

A VHF version of this Callbox is also available.

For Frequently Asked Questions about Wireless Callboxes see the Wireless Callbox FAQS