Scubapro Aladin One Matrix 2-Gauge Console

A dive computer tracks the actual depth and time profile you have dived and the tissue loading that follows from it, which is personal to you. A rented computer has no record of your recent diving, and swapping models each trip means relearning the display and menus when you should be focused on the dive. Owning one you know well is a genuine safety and comfort improvement.

No. A computer only tracks the profile of the diver actually wearing it, and even buddies who stay together do not follow identical depth and time profiles. Every diver needs their own computer, and passing one between divers or between dives is unsafe.

Conservatism settings make the computer's calculations more cautious, shortening allowed bottom times and adding margin beyond the base algorithm. Divers commonly add conservatism for factors such as cold, hard work, fatigue, or repetitive multi-day diving. How and when to adjust it is covered by your training and your computer's manual, so set it before you get in the water and follow what your computer tells you during the dive.

Broadly there are two types: user-replaceable batteries, often a coin cell that you or a shop swap along with resealing an o-ring, and sealed rechargeable batteries that charge from a cable or dock. Neither is universally better, as replaceable cells are convenient on remote trips while rechargeables avoid ever opening the case. Follow the manual exactly for any battery change, because an improperly seated o-ring or case is the usual cause of a flooded computer.

Yes, both change the picture, and both are governed by your training agency's guidance and your computer's instructions rather than any casual rule of thumb. Many computers have an altitude setting that must be configured before diving at elevation, and most display a no-fly or surface-interval countdown after a dive. Follow your computer and your training, and ask a dive professional or a dive-medicine specialist if you are unsure.

Rinse it in fresh water after every dive day, paying attention to the buttons and around any sensor openings where salt crystals form, and let it dry fully before storing. Keep it out of prolonged direct sun and extreme heat, and avoid pressing buttons while sand is on the case. Inspect the strap or bungee often, because a failed strap loses far more computers than a failed computer does.

A wrist computer is worn like a watch and read by raising your arm, while a console computer sits at the end of a hose with your other gauges. Air integration means the computer also displays cylinder pressure, either through a hose or from a wireless transmitter on the first stage, and often estimates remaining gas time. All of them run a decompression algorithm, so the real difference is where you read the information and how much of it you get.

It has a maximum operating depth of 394 feet / 120 meters and is a single-gas computer. You can set nitrox from 21% to 50% oxygen in 1% increments, with ppO2 adjustable between 1.0 and 1.6 bar. Decompression status is calculated with the ZH-L16 ADT algorithm using 16 tissue compartments, and the unit also offers saltwater and freshwater modes.

The Aladin ONE Matrix uses a CR2450 coin cell that is user-replaceable, so you do not have to send the computer away for a routine change. Scubapro rates the CR2450 battery for 2 years or 300 dives. Follow the manual's sealing instructions when changing it so the housing stays watertight.

Data transfer is wireless over Bluetooth 4.0 Low Energy, which replaced the infrared (IrDA) system used on earlier Aladin models. You can send logs to a PC or Mac as well as to iOS and Android devices, so no separate interface cable or IR dongle is needed for routine logbook downloads.

The 2-gauge console (item 05.045.240) holds the ALADIN SPORT Mx computer module and a PG U-Line PSI pressure gauge on an inline mount with swivel and 85 cm HP hose. The 3-gauge version adds a compass to the same console. Scubapro also publishes the Aladin ONE Matrix as a wrist unit and as a basic capsule module.