Garmin Descent T1 Transmitter

SKU: 010-12811-00

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In the box

Garmin Descent T1 Transmitter

  • Garmin Descent T1 Transmitter
  • User Manual
  • Limited 1-Year Warranty

From The Wavelength Blog Read more

Garmin Descent T1 Transmitter

Track your every breath when you pair the Garmin Descent T1 transmitter with a Descent dive computer. Monitor up to 5 tanks via SubWave sonar technology so you can dive with multiple tanks or see your buddy’s air levels. Descent T1 enables you to monitor tank pressure, remaining air time, and air consumption rate for multiple types of diving.


Descent T1 is built to withstand the elements and is water-rated to 11 ATM.

Know Your Tank

Get tank pressure, air time remaining, air consumption rate, and battery remaining sent directly to paired compatible Descent dive computer.

Multiple Divers

Pair up to 5 transmitters to each compatible dive computer within a range of up to 10 meters.

Garmin Descent T1 Transmitter

  • Physical dimensions: 3.33 x 1.44 x 1.44 inch (84.50 x 36.52 x 36.52 mm)
  • Battery: 3 V CR123A lithium
  • Battery life: Up to 100 hours
  • Thread type: 7/16 inch (20 UNF)
  • Normal operating temperature: From -20 to 60-degree-Celcius (from -4 to 140-degree- Fahrenheit)
  • Underwater operating temperature: From 0 to 40-degree-Celcius (from 32 to 104-degree- Fahrenheit)
  • Storage temperature: From -30 to 70-degree-Celcius (from -22 to 158-degree- Fahrenheit)
  • Wireless frequency: 2.4 GHz at 0 dBm
  • Surface transmission range (ANT wireless technology): Up to 10 m (33 feet)
  • Underwater transmission range (sonar): Up to 10 m (33 feet)
  • Water rating: Dive 110 meters
  • Pressure rating: 300 bar (4351 psi)
  • Inspection interval: Inspect parts before each use for damage. Replace parts as needed. (Aside from normal wear and tear, performance is not affected by aging.)

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