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Garmin Alpha T 20 Dog Device CollarUpdated 18 days ago

Table of Contents

Garmin Alpha T 20 FAQs

Garmin Alpha T 20 Specs

Garmin Alpha T 20 Tech Support



Garmin Alpha T 20 FAQs

How long does the battery last?
Up to 68 hours with a standard battery pack (in default update rate mode). It may vary depending on settings and usage.

How do I charge the collar?
Use the included USB-C charging cable and split adapter. The device can be charged while on or off the dog.

Can I replace the battery?
Yes, the battery is user-replaceable. Garmin offers additional battery packs for extended trips.

Is the Alpha T 20 waterproof?
Yes, it's water-rated to 1 ATM (10 meters), making it perfect for rugged outdoor use, including water retrieves. 

Which handheld devices work with the Alpha T 20?
Compatible Garmin handhelds include:

  • Alpha® 200i / 200
  • Alpha® 100
  • Astro® 430
  • Garmin Explore™ App (for syncing data and trip planning)

Does it have training (correction) functions?
No, the T 20 is a tracking-only collar. If you need training capabilities, consider Garmin's TT series collars. 

How do I pair the collar with my handheld?
From your handheld device, go to Dog List > Add Dog > Follow the on-screen prompts while turning on the collar. Make sure you're within pairing range.

My collar won’t power on — what should I do?
Check that the battery is charged and properly connected. Hold the power button for a full second. If issues persist, reset the collar by holding the power button for 30 seconds.

Why is my collar losing GPS signal?
Ensure the GPS antenna is unobstructed and the collar has a clear view of the sky. Dense tree cover or terrain can affect performance.



Garmin Alpha T 20 Specs

Key Specifications

FeatureDetails
Model NameGarmin Alpha® T 20 Dog Device Collar
Tracking TechnologyMulti-GNSS (GPS, Galileo)
Tracking RangeUp to 9 miles (14.5 km)
Dog CapacityTracks up to 20 dogs when paired with compatible handheld device
Weight8.5 oz (240 g)
Collar Strap Size1" (2.54 cm) wide, adjustable (fits necks 10" to 30")
Waterproof RatingIPX7 (Waterproof to 1 meter for 30 minutes)
Battery TypeRechargeable lithium-ion battery
Battery LifeUp to 68 hours (in default update rate mode)
Charging MethodUSB-C Charging (with split adapter included)
Charging TimeApproximately 2 hours
Operating Temperature Range-4°F to 140°F (-20°C to 60°C)
Standby Time30 days when fully charged
Frequency Range433 MHz
CompatibilityCompatible with Garmin Alpha® 200i, Alpha® 100, Astro® 430, Garmin Explore™ App
GPS ReceiverHigh-sensitivity GPS and Galileo receiver
Antenna TypeInternal GPS/GLONASS/Galileo antenna
Vibration AlertsYes, vibration alerts for status updates
Display Type (Handheld)Monochrome or Color (depending on paired device)
Training FunctionalityNo (tracking only)
Contact PointsReplaceable, comes with short and long contact points
Collar MaterialDurable plastic casing, designed to withstand rugged conditions
Warranty1-year limited warranty (manufacturer's defects)


Need further troubleshooting? No problem!

For further technical support, we recommend contacting Garmin's fantastic technical support team—this can be done in two ways:

As an Authorized Garmin dealer, any Garmin Alpha T 20 Dog Device Collar‎ on TrackBetter.com is completely eligible for Garmin's 1-Year Limited Manufacturer Warranty. So you can be confident you'll be protected from any product defects within 365 of your delivery date!

When you purchase a Garmin Alpha T 20 Dog Device Collar on TrackBetter.com, you have 60 days to return or exchange it—no questions asked!  

The TrackBetter.com team is here to support you the entire way! So if you're not getting the help you need, please contact us via Help Center (email, chat or phone) and we'll make sure you're taken care of.

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