TUL- 600
October 18, 2017
October 18, 2017
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IQ-900 ZEN


IQ-900 ZEN

Out of stock

SKU: IQ-900 Category:

The IQ-900 Zen is a full-featured wrist-top computer that boasts a refined, stylish design and can be worn at the office, on the town or more importantly in the ocean.  Anytime, anywhere the Zen is your go to timepiece and dive instrument.

The IQ-900 can be operated as a watch, Air computer, Nitrox (EANx) computer, digital depth gauge/timer or as a free dive depth gauge/timer.  The Zen’s large alphanumeric and backlit display allows for high legibility in or out of the water, although its size is that of a normal style watch.  In addition to offering the latest comprehensive computer features, the Zen adds a Deep Stop function for enhanced safety.

Deep Stop Function
Several TUSA computers feature an optional deep stop function for additional safety. The deep stop mode is activated when a dive exceeds 80 FT (24M) for more than 1 second. Upon ascent, the computer will display a Deep Safety Stop screen and the recommended stop depth for a period of 2 minutes. This deep stop is highly recommended as additional opportunity to off-gas, but is not mandatory. If the diver chooses not to serve the stop it will not adversely affect the remaining No-Decompression Limits of the dive.


> Advanced 2 gas wrist-top (watch) computer
> Air, Nitrox, Gauge, Free Dive and Watch Operating Modes
> 2 Mix Switching Feature: Mix 1 (Air, 21-50%), Mix 2 (Air, 21-100%)
> Manual or Water-Activation
> Audible and Flashing Icon Alarms
> Large alphanumeric and backlit display
> Advanced user safety settings
> Deep Stop Feature and Safety Stop
> 1 Touch Log Access
> Automatic altitude adjustment from sea level to 14,000′
> No fly icon, residual nitrogen discharge time display
> PC download and upload settings/log data with TUSA Datalog Interface
> User-replaceable battery with hot-swap (Battery: CR2430, 3V)
> TUSA Algorithm based on Buhlmann ZHL-16c
> Variable Ascent Rate Indicator
> Colors: Titanium Grey/Black, Black
2 Gas Mix
This feature allows the diver to preset two Nitrox gas mixtures (Mix 1 and Mix 2) for easy switching during the dive as necessary. Mix 1: 21 to 50%, Mix 2: 21 to 99%.
Audible Alarm
TUSA’s computers feature audible and visual alarms for the most important dive data warnings. Ascent rate, maximum depth, no decompression limits, safety stop and several other key data can be set to alert the diver.
Backlit Display
Several TUSA computer instruments feature a backlit display for night diving or low-light situations. The bright backlight is activated by a touch of a button and the duration can be set for up to 10 seconds in length enabling the diver to view critical dive data easily and quickly.
PC Downloadable
TUSA’s PCLogbook and TUSA DataLog PC interfaces allow the diver to transfer complete log and profile history from the dive computer to a personal computer or upload user settings to the computer. A PC interface unit is sold separately.
User Replaceable Battery
Convenience and ease-of-maintenance is imperative in the design of today’s dive computer. Each of TUSA’s computers offer a user-friendly replaceable battery that can be changed on a moment’s notice using standard widely-distributed batteries.
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