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Shearwater Research Perdix 2 TI Black Computer

Shearwater Research
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The Shearwater Research Perdix AI dive computer incorporates a powerful feature set, easy to understand menus, and easy to read full-colour display. This version also supports optional wireless transmitters to display the cylinder gas pressure without the use of hoses. A wireless transmitter is NOT included, but available as an option.

As an Authorised Shearwater Demo Centre we have a Shearwater Research Perdix AI dive computer and Transmitter in-store and available for you to take for a try dive to see just how brilliant it is. Call or email us to book your try dive!

Shearwater Perdix I — Experience Legendary Diving

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The Shearwater Perdix TI won Testers Choice for air-integrated wrist dive computers during ScubaLab's 2017 dive computer review.

OC/CC TRIMIX 5 OC gases / 5 CC gases, Optional wireless air integration up to 4 tanks, Vibration motor alerts, Auto Battery Detect, 3 axis, tilt compensated, digital compass,, Aluminosilicate toughened glass, Black DLC, Titanium Bezel and Piezo buttons. This of Perdix from Shearwater Research of Canada is a full decompression dive computer with recreational divers in mind. The Perdix TI supports wireless gas pressure integration with tracking tank gas pressures (optional transmitters required.) Out of the box, the Shearwater Perdix includes open-circuit and closed-circuit Air, Nitrox and Trimix mixed gas functionality along with several enhanced navigation features for the three-axis tilt-compensated digital compass. The standard firmware supports English language menus and both imperial/metric units of measure.

The Shearwater Perdix TI model with the TI designation has the radio frequency receiver built-in to the electronics. The Perdix AI base price does not include a tank pressure transmitter because the consumer may already own a compatible transmitter.

The Shearwater Perdix AI is capable of wirelessly connecting to either one or two optional transmitters giving the diver ability to monitor up to two tank pressures and allowing for sidemount diving. It's also capable of calculating the Gas Time Remaining (GTR) on one assigned tank. Air integration is optional for all modes, from OC Rec to CC/BO. The tank pressure(s), in PSI or BAR, and GTR can be displayed to the customisable slots on the main display screen or accessed through the underlying information screens. Enabling the AI feature causes approximately 10% decrease in Perdix battery life.

Will my existing transmitter work with the Shearwater TI computer? Shearwater Research tells us that as long as the transmitter is marked with "FCC ID MH8A" on the body then the transmitter, regardless of the brand, will also work with their Perdix TI and NERD 2 model air integrated dive computers. However, no other Shearwater dive computer model, including the Perdix model without the "AI" designation and the original NERD, support integration with a pressure transmitter. The first stage regulator tank-pressure wireless transmitter supplied by Shearwater Research is actually manufactured by Pelagic Pressure Systems. Pelagic has been supplying those same OEM transmitters to various dive computer manufacturers such as Aeris, Aqualung, Hollis, and Oceanic for many years.

The Shearwater Perdix TI offers an information screen utilising a large full colour LED LCD display. The display will automatically adjust intensity based on available light to make the display easily readable whether on the surface in sunlight, in open water or in a cave.

During a decompression dive, the Perdix TI provides complete information displays of all required stop times. The Perdix AI can provide time-to-surface based on "look ahead" at planned gas switches. Multiple gas definition presets are supported with any combination of oxygen, nitrogen and helium. The Perdix AI will NOT "lockout" after a missed stop or ascent rate violation.

After the dive, the Perdix TI communicates via next-generation Bluetooth Smart Ready™ with iOS devices such as the iPad and iPhone. In addition to current Shearwater and third party support for Mac and PC desktop applications, users are able to download dives using their iOS devices in conjunction with third-party applications.

The Shearwater Perdix TI has been designed to accept any type of AA size battery including alkaline, lithium and rechargeable.

Recreational Open-Circuit Features

Key features of the Recreational Open-Circuit mode (aka Recreational Nitrox mode) include a simpler menu structure, less cluttered display with a larger font and configurable bottom row, optional safety stops, and a no-decompression limit dive planner. The simplified settings allow for three breathing gas mixtures (Air or Nitrox) and place a greater emphasis on the maximum operating depth (MOD) and no decompression time limit (NDL). The display prominently warns the diver if their depth is near, at or exceeds the MOD of the selected breathing gas. The diver also simply selects one of three levels of NDL conservatism and during the dive, a bar graph turns from green to red as the diver approaches the NDL. An optional 3-minute countdown safety stop starts when the diver reaches shallower than { 20 feet | 6 meters } on the ascent. If the diver exceeds the NDL and requires stops, the display turns red and warns "DECO STOP" with the mandatory depth and stop times.

In the Box

Included with every Shearwater Perdix TI are two elastic straps with buckles, elastic tubing for configuring using the 'bungee' style wrist mount, zippered hard case, screen protector (already installed), dual O-ring seal gold contact battery door, and battery already installed (ready to dive out of of the case), two spare battery door O-rings, USB Bluetooth adaptor, printed Quick Start Guide with instructions for downloading the full manual and desktop software from the Shearwater Research website.

Shearwater supplies the Perdix TI with a zippered 'travel' case. The Shearwater travel case included with the Perdix TI is a very snug fit, suitable for dry storage, but not suitable for boat use or damp storage.

Shearwater Perdix TI Modes

  • OC Rec - Three gas nitrox computer with features for the serious recreational diving enthusiast. Includes adaptive safety stop and NDL bar graph.
  • OC Tec - Multi gas, trimix decompression computer. 5 OC gases, Trimix enabled by default.
  • CC INT - Closed Circuit/Bailout. 5 OC/5 CC gases. Trimix enabled. Constant PO2 for closed circuit.
  • Gauge - Bottom timer with depth, time, resettable stop watch function. Full dive logging

Shearwater Perdix AI Features

  • Optional Wireless Tank Pressure Integration
  • Air, Nitrox, Trimix capable
  • Easy to read large full colour screen
  • Supports 1 or 2 optional wireless transmitters (Not Included)
  • Quick OC bailout from CC
  • 3 axis, tilt compensated, digital compass
  • Decompression
  • Dive Planning
  • Buhlmann GF algorithm
  • Optional VPM-B algorithm
  • User Replaceable AA Battery
  • Dive Logging
  • Upgradeable Firmware
  • Smart Ready Bluetooth Interface
  • Two year warranty against manufacturing defects

Shearwater Perdix AI Specifications

  • Screen Resolution: 320x240 QVGA
  • Display Type: Full colour LED LCD
  • Display Size: 2.2"
  • Battery Type: Single AA (any type)
  • Battery Life:
    AA Alkaline: 40 Hours
    SAFT LS14500: 100 Hours
  • Number of Gases: 5 OC / 5 CC
  • Dive Log: 1,000 Hours
  • Depth Rating: 260m (850ft)

Shearwater Perdix AI Dimensions

  • Computer
    (WxHxD): 83 x 74 x 39 mm (3.26" x 2.9" x 1.53")
    Weight: 154g (0.34 lbs)
  • Package
    (WxHxD): 130 x 105 x 70 mm (5.1" x 4.1" x 2.8")
    Weight: 330g (0.73 lbs)

Shearwater Perdix AI Manuals

Shearwater Perdix AI Operating Instruction Manual (PDF)
(This manual only covers AI features)
Shearwater Perdix AI Operating Instruction Manual (PDF)
(This manual covers operating instructions for all other features of the Perdix AI)
Shearwater Perdix Nitrox Recreational Mode User Manual (PDF)
(This manual covers the Recreational Nitrox operating mode in the Perdix)

Download/read the Shearwater Perdix AI Brochure (PDF).


The Perdix AI is supplied by Shearwater, in addition to including their two depth compensating wrist straps with slide release buckles, also includes a length of latex rubber tubing for use with the bungee mount option. The Scuba Doctor does not recommend the use of the latex rubber tubing because of our concerns about durability, but if you do elect to use it then we suggest annual replacement of the rubber tubing and that you carefully follow the instructions in the full Perdix AI manual for how to tie the tubing. Use only the special secure knot described in the manual, and use two separate independent segments to make the two wrist loops.

If you wish to take advantage of the bungee wrist mount on your Perdix AI, you should consider using our abrasion-resistant braided nylon jacket shock/bungee cord in place of the rubber tubing.

Warranty Information:
This product has a limited warranty of two (2) years.

Note: This item cannot be delivered outside of Australia.

The Shearwater Research Perdix dive computer is also available without Air Integration.

(09/22 HS)

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