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TEC-T3-6X Isotope Triode Fob

$46.95 Regular price
Unit price

$3 Shipping on all Domestic orders

FREE International Shipping on Orders Over $150

IMPORTANT NOTE: This product DOES NOT include tritium vials. Please refer to our Tritium Primer to learn more about tritium and where to purchase it.

The versatile TEC Isotope Triode Fob is designed to hold several glass tritium vials (not included), which will glow continuously for many years without the need to charge it from sunlight or UV light. This version of Isotope Fob has 3 individual bores to house the tritium, hence the nickname "Triode". The Triode can hold several combinations of tritium vials, as each bore can hold either one 3mm x 23mm vial OR two 3mm x 11mm vials. Think of the color combinations!

The TEC Isotope Triode Fob has three primary bores to hold the tritium vials, and the six grooves on the side of the housing provide maximum tritium visibility, yet offers superior protection of the glass vials. Once the tritium is installed, you simply insert the included rubber plug (spares included), install the o-ring over the post, and attach the split ring. This prevents the tritium vials from sliding out, yet provides an easy way to remove the vials if you want to change or re-position the colors.

Complete your EDC collection with the functional and stylish TEC Isotope Triode Fob, which provides just the right amount of light for locating items in the dark. Perfect for attaching it to your keychain, camping gear, zipper pulls on gear bags or jackets, or try it on the pull chain on your ceiling fan. Where will you clip yours?

 Isotope Triode Fob Features:

  • Custom designed with 3 bores
  • Each bore can hold one 3mm x 23mm (sometimes specified as 3mm x 22.5 mm) vial OR two 3mm x 11mm vials
  • Combine different colored tritium vials for a beautiful effect
  • Grade 5 titanium housing
  • Bead blasted, uniform matte finish

What you get:

  • (1) TEC Isotope Triode Fob
  • Packaged with (5) rubber plugs for tritium vial containment (3 required plus 2 spares)
  • (2) O-rings (1 required plus 1 spare)
  • (1) 11.1 mm [7/16"] diameter split ring for attachment to other items
  • Important Note: Product DOES NOT include tritium vials

    The TEC Isotope Triode Fob is a metal housing suitable for mounting multiple glass tritium vials.

    • Material: Ti-6Al-4V Titanium
    • Finish: Bead Blasted
    • Outside Diameter: 12.0 mm [0.472"]
    • Overall Length: 36.8 mm [1.449"]
    • Split Ring Hole Size: 2.5mm [0.098"]
    • Total Assembled Weight (without tritium vials): 7.0 grams [.25 oz]
    • Total Assembled Weight (with tritium vials): 7.6 grams [.27 oz]
    • *Does not contain tritium vials

    The TEC Isotope Fob Series are keychain fobs specifically designed to mount standard 3mm x 23mm and/or 3mm x 11mm self-luminous tritium vials. They do not include tritium vials, you must purchase them from another source typically outside the United States.

    Learn more about what tritium is and where to buy it by clicking here.

    Install tritium vials as shown:


    TEC Accessories offers a 30 day no-questions-asked return policy on all of our products. If you are not satisfied with your purchase, for any reason, contact us to arrange a return/refund. In addition, all products carry a 90 day warranty against defects in materials or workmanship. Please contact us if you have any problem with your purchase that requires attention, and we will promptly make any necessary corrections.

    Shipping Times

    PLEASE NOTE: Due to the current logistics delays, shipping times may take longer than expected. This is especially true for International shipments, where delivery times can take weeks longer than usual. This is beyond our control, and we ask that you please be patient with expected deliveries until shipping companies get back to a more "normal" schedule.

    We make every effort to process orders within one working day, however there may be slight delays depending upon the number of orders we receive, holiday periods and available staffing resources. Typically we will process all orders within no more than 2 working days.

    Shipping times (from the time the package is dropped off at the carrier) will vary depending upon the carrier, method of shipment and destination. For example USPS Domestic First Class Mail should take between 2-3 days, but we have seen instances of 5-7 days. Domestic Priority Mail should take 1-2 days, but can take anywhere from 1-4 days. Domestic Express Mail should take one day, but that is only if your processed order is delivered to the post office before the cutoff time (typically 12:00 noon). Also keep in mind that weather and travel distance can have an effect on delivery times.

    International shipments have even more variables that must be considered. A package sent by USPS First Class International can take anywhere from 1-3 weeks, sometimes longer depending upon the country. International shipments have the potential of being delayed by Customs, as well as having additional taxes or fees levied on a package. These are out of our control, and we advise that you become familiar with your specific country's shipping regulations to understand the impact to your shipment.

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    Customer Reviews

    Based on 13 reviews

    Great products!

    N. Cunningham
    Great Glow Fob Lantern

    I purchased this along with the TEC UFO key ring and the TEC T-323p Isotope Photon Fob. The craftsmanship of this fob is great and even though I wish the top cap was screw on the rubber plugs & oring actually hold my 3 tritium tubes very nicely. I have green, blue & yellow colors installed and they look cool. Some what expensive for what you actually get but it's well crafted titanium and it comes in a nice box filled with shock foam to protect it. Also came with a cool little micro size container that has spare orings & plugs.

    3 years later

    This triode fob is great, I filled mine with 3 longer tritium vials all green in color. It may be small but is still a head turner. Product is true to description with vials fitting perfectly and the retention method to keep them is great. Though when I purchased mine they did not give my any extra plugs or o rings. They have changed that since then now giving you a couple spares. But I haven't had any need for spares as I haven't taken it apart. The matte finish on the fob hasn't scratched or changed, and the vials (sold separately) are still just as bright as when I bought them.

    I would like to note that you should use caution when using this on a key ring as keys can fit between the six grooves and touch the vials. Glass vials and metal keys don't mix well. If you do happen to break a vial take caution and put the fob in a ventalatied area as tritium can be dangerous. I haven't broken any vials like this but it is smart to take caution when handling tritium.

    5/5 would buy again

    Jon S.
    Awesome Item

    These Isotope Fobs are really neat items. This one is really cool since you can put different colored Tritium Vials in each space. All of Tec Accessories products are top notch. This one doesn't disappoint.

    griffin harris
    Five Stars