Infrared Transmitters

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HALO LED Junction Box

HALO is an ATEX/IECEx certified EX e junction box for use with Searchpoint Optima Plus, providing a local visual status indication at a glance
Features and Benefits
  • Clear device status provides enhanced safety
  • Suitable for wide range of applications
  • ATEX / IECEx hazardous area approval
Quick Specs
  • Alarm Range: 10 to 65%FSD in 5% increments
  • Operating Temperature: -40 °C to 65 °C
  • HALO is RoHS compliant
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Additional Information

Product Overview

The HALO Junction Box enhances the Searchpoint Optima Plus point infrared Hydrocarbon gas detector* by providing a local display showing the sensor status at a glance, even from a distance. It also gives convenient, non-intrusive interaction with a HART® handheld device through an optional intrinsically safe (IS) HART® connection point.

HALO uses three instantly recognisable ‘traffic light’ colours to indicate its status. The LED light ring shows green to indicate normal operation, yellow to indicate a fault / inhibit and flashes red to indicate an alarm. This allows anyone in the area to clearly and immediately see the status of any detector. This can be particularly useful to identify operational status if the detector is located in a difficult to access area.

HALO is an ATEX / IECEx certified Ex e junction box for use with Searchpoint Optima Plus. It provides a local visual status indication, and an optional intrinsically safe non-intrusive HART® handheld device interface, for sensors that support HART® communication. It is suitable for use in either Zone 1 (gas) or Zone 21 (dust) hazardous areas.

HALO has three M20 cable entries and one M25 sensor entry. Internally, the box has a continuity plate with two earth connection points, and a 12-way terminal block.

The box lid has a three colour light ring (green, yellow and red), and optional connections for a HART® handheld device.

Additional Features and Benefits:

Easy to use
• Clear device status provides enhanced safety
• Easier to locate a unit in fault / warning – reduces time for maintenance
• Allows convenient connection of a HART® handheld device
• No hot work permit required to connect handheld device

Local display
• LED light ring indicates status at a glance: -
- Green – Normal
- Red – Alarm
- Yellow – Fault / Inhibit
• Simple configuration of alarm point and LED brightness

Suitable for wide range of applications
• Can be mounted in highly visible location
• Detector can be mounted remotely from HALO
• Backwards compatible with Searchpoint Optima Plus
• ATEX / IECEx hazardous area approval
• Ex e enclosure
• One M25 sensor entry, three M20 cable entries

Easy to Install
• Optional pipe mounting bracket
• Optional sunshade
• Optional retrofit adaptor plate


Gas detection technology can be complicated, and we always get questions about our products and services.

Here is a list of some of the more common questions.

We do not sell our products directly on our website but we would be happy to assist you with your gas detection needs.  On each product page you will see a red button on the right-hand side titled “HOW TO BUY”.  If you click on this button a form will appear which will go directly to one of our sales representatives once completed and submitted.  

You can also call one of our sales representatives directly.  Click here to go to the Contact Us page.  

There are two areas where you can access technical documents.  First, you can visit our Technical Library in the Support section of the website.  Here you will be able to access our entire catalog of documents and videos for all products – current and legacy products.  

You can also access the technical documents for each product on that product’s respective page within the website.    

Yes we do.  Check out our HA University training section to see what programs are available and sign up for any that you are interested in.  These courses are very informative and led by our expert engineers.  If you have any questions about training opportunities for yourself or your staff and would like to talk to a Honeywell representative, click here.

Check out the Product Inquiry page in the Contact Us section.  Here you’ll find sales contacts for each of our product lines and they can help you with any questions you may have from technical specifications to ordering information. 

Check out the Service & Repairs page in the Contact Us section.  Here you’ll find the contact information for our service centers in your region. 

There are several ways you can search for products on our website:

  • Click on the Products link in the main navigation to search by product lines.
  • Find products for a specific Industry or Application by clicking on the links in the main navigation bar at the top of the page.
  • Use our Gas Finder if you’re looking for a product that can detect a specific type of gas.
  • If you still can’t find the product you’re looking for, type the name of the product in the search bar at the top of the page.

Because we do not sell our products directly we cannot quote a specific price on our website.  Contact a sales representative through either the “HOW TO BUY” button on the product page or by calling them and they will be able to obtain pricing from local distributors in your area. 

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