O2 Monitoring

Analox Replacement 02 Sensor

21 reviews

SKU: AQUNAOAS

^$139.95

+ wishlist

In Stock

DESCRIPTION

A replacement O2 sensor with a resolution of 0.1% O2, a sensor life of up to 4 years, and complete with an O-Ring.

Pros

Fast delivery
Cost-effective solution
Perfect fit
Easy to install
Reliable performance

Nuvair O2 Quickstick Oxygen Analyzer

15 reviews

SKU: NVAOA

^$340

+ wishlist

In Stock

DESCRIPTION

A user-friendly oxygen analyzer with a replaceable sensor, exceeding dive industry standards for Nitrox divers.

Maxtec "Handi" Hand Held Oxygen Analyzer

12 reviews

SKU: AQUNHOA

^$349.95

+ wishlist

In Stock

DESCRIPTION

A compact and maintenance-free hand-held oxygen analyzer with a splash-resistant 3-digit LCD display.

Mares LED Tank Module

8 reviews

SKU: MRSQT

~~$339.95~~ Save: $40.95 (12%)

^$299

+ wishlist

In Stock

DESCRIPTION

A Mares LED Tank Module with RF transmission, LED indicator for tank pressure, and streamlined dive profile.

Nuvair O2 Quickstick & O2 Trimix Replacement Sensor

8 reviews

SKU: NVARC

^$119

+ wishlist

In Stock

DESCRIPTION

A high-performance replacement oxygen sensor for select Nuvair oxygen analyzers.

Scubapro Luna 2.0 Air Integrated Computer

7 reviews

SKU: SCPL2AIC

^$499

+ wishlist

In Stock

DESCRIPTION

A wireless air-integrated computer with customizable settings, a modern display, and intuitive interface.

Maxtec MAXO2 + Oxygen Analyzer

4 reviews

SKU: AQUNMHA

^$489.95

+ wishlist

In Stock

DESCRIPTION

A durable and user-friendly oxygen analyzer with one-touch calibration and long battery life.

Hollis Pressure Gauge Brass Module w/o Boot

4 reviews

SKU: HLSPGMP

^$127.95

+ wishlist

In Stock

DESCRIPTION

A compact and accurate brass pressure gauge module with scratch-resistant tempered glass lens.

Shearwater Peregrine TX Wrist Dive Computer with Smart AI Transmitter

2 reviews

SKU: SWTPDCTXC

~~$1160~~ Save: $50 (4%)

^$1110

+ wishlist

In Stock

DESCRIPTION

A fusion of the Shearwater Peregrine TX Wrist Dive Computer and Swift Next Gen Smart AI Transmitter for scuba diving, with air integration, digital compass, and wireless charging.

Seac Screen Dive Computer Console w/Pressure Gauge

1 reviews

SKU: SECSDCS

~~$499~~ Save: $99.80 (20%)

^$399.20

+ wishlist

In Stock

DESCRIPTION

A Seac dive computer console with pressure gauge, easy-to-read display, and Buhlmann ZHL-16C algorithm.

Oceanic Geo Air Wrist Computer with Transmitter

1 reviews

SKU: OCNGDCWBKT

^$649.95

+ wishlist

In Stock

DESCRIPTION

A stylish wrist-watch computer with Bluetooth connectivity, 2 nitrox mixes, and user upgradeable firmware.

PADI Emergency Oxygen Provider Package #60032

1 reviews

SKU: PDI60032

^$71.20

+ wishlist

In Stock

DESCRIPTION

A comprehensive PADI Emergency Oxygen Provider Package to learn about dive injuries and emergency oxygen equipment.

XS Scuba QuikVu Pressure & Depth Gauge Console

SKU: XSSQVCPDI

^$250.95

+ wishlist

In Stock

DESCRIPTION

A slim and ergonomic console with high visibility luminescent gauges for accurate depth and pressure monitoring.

Apeks XTX40/DS4 DIN Oxygen Regulator

SKU: APXXTX4DS4D

^$699

+ wishlist

In Stock

DESCRIPTION

A high-performance oxygen regulator with an over-balanced design and customizable exhaust for flexibility.

Aqualung i770R TX Dive Computer with Transmitter, White/Petrol

SKU: UDRIT17

~~$1099~~ Save: $300 (27%)

^$799

+ wishlist

In Stock

DESCRIPTION

A durable, hoseless dive computer with multi-gas support, Bluetooth readiness, and bright display.

Seac Screen Dive Computer Console with SPG and Compass

SKU: SECSCSC

~~$542~~ Save: $108.40 (20%)

^$433.60

+ wishlist

In Stock

DESCRIPTION

A durable Seac Screen Console with SPG and Compass for versatile dive management and comprehensive dive planning.

Blue Reef Oxygen/Nitrox Pressure Gauge with Hose

SKU: BLRNONPG

~~$140~~ Save: $85.05 (61%)

^$54.95

+ wishlist

In Stock

DESCRIPTION

A blue hose-mount pressure gauge designed for scuba oxygen and nitrox monitoring.

Cressi Leonardo 2.0 Wrist Computer

89 reviews

SKU: CSBLWBKW

~~$249.95~~ Save: $25 (10%)

^$224.95

+ wishlist

In Stock

DESCRIPTION

A simple and functional wrist computer with a single button interface, large numerical displays, and distinct audible alarms.

Pros

Useful safety features
Affordable and good value for money
Easy to use and program
Reliable and accurate
Clear and easy-to-read display

Garmin Descent Mk3i 51mm Dive Computer Smartwatch

57 reviews

SKU: GRMDMK51TB

~~$1799.99~~ Save: $200 (11%)

^$1599.99

+ wishlist

In Stock

DESCRIPTION

A dive-first smartwatch with enhanced sonar technology, GPS, and dive readiness tool, synced with Garmin Dive app.

Spare-Air Screw-In Dial Pressure Gauge

17 reviews

SKU: SXDPG

~~$64~~ Save: $19.05 (30%)

^$44.95

+ wishlist

In Stock

DESCRIPTION

A convenient and reliable pressure gauge for Spare-Air that allows for easy monitoring of air levels.

Garmin Descent G1

15 reviews

SKU: GRMDG1SG

~~$549.99~~ Save: $50 (9%)

^$499.99

+ wishlist

In Stock

DESCRIPTION

A watch-style dive computer with health monitoring, Garmin Pay, and reviewable dives.

Aqualung i770R Computer with USB Cable

10 reviews

SKU: UDRI770

^$899

+ wishlist

In Stock

DESCRIPTION

A compact and robust dive computer with high-visibility color screen, Bluetooth capability, and rechargeable battery.

Mares Puck Pro Ultra Lite Dive Computer

10 reviews

SKU: MRSPPUC

~~$279.95~~ Save: $55 (20%)

^$224.95

+ wishlist

In Stock

DESCRIPTION

A user-friendly dive computer with Bluetooth, Nitrox support, and a clear, easy-to-read display.

Analox Sensor Saver Cap

10 reviews

SKU: AQUNASC

^$27.95

+ wishlist

In Stock

DESCRIPTION

A sensor saver cap that extends the life of the sensor when used with the Analox 02EII Oxygen Analyzer.

Oceanic Pro Plus 4.0 Air Integrated Computer with Compass

9 reviews

SKU: OCNDMPP4C

^$789.95

+ wishlist

In Stock

DESCRIPTION

A highly advanced air integrated computer with compass, Bluetooth technology, and multiple operating modes.

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O2 Monitoring

Oxygen monitoring is an essential part of safe diving, particularly for those involved in technical, rebreather, or extended-range underwater activities. As the season shifts into spring and divers begin preparing for new adventures, the importance of reliable O2 monitoring equipment becomes even more pronounced. Whether you’re planning early-season dives in cooler waters or gearing up for tropical trips later in the year, maintaining accurate awareness of oxygen levels can make all the difference in both performance and safety. O2 sensor diving technology allows divers to continuously assess the partial pressure of oxygen in their breathing gas, helping to prevent the risks associated with hypoxia (too little oxygen) or hyperoxia (too much oxygen). These risks are not just theoretical; even experienced divers can encounter unexpected changes in gas composition, equipment function, or physiological responses underwater. Having a dependable O2 monitoring device offers peace of mind, allowing divers to focus on the beauty and excitement of the underwater world rather than worrying about unseen dangers.

When considering which O2 monitoring tools to add to your gear setup, it’s important to think about your specific diving style and needs. For recreational divers, a straightforward, easy-to-read O2 sensor can provide an added layer of safety, particularly if you’re diving with enriched air (nitrox) or exploring new environments. Technical and rebreather divers, on the other hand, often require more advanced O2 monitoring solutions capable of integrating with other dive computers or life-support systems. These devices not only display real-time oxygen levels but also log data for post-dive analysis, helping divers refine their techniques and plan future dives with greater confidence. Features to look for include clear digital displays, robust waterproof construction, and user-friendly calibration processes. Battery life is another key factor, especially for those planning multiple dives or extended trips where recharging options may be limited. Many divers appreciate O2 monitoring devices with modular sensor components, allowing for easy replacement or upgrades as technology evolves. In addition to personal use, O2 monitoring equipment makes a thoughtful and practical gift for the diver in your life—whether they’re just starting out or have years of experience under their belt. Gifting a high-quality O2 sensor is more than a gesture; it’s an investment in their safety and enjoyment, showing that you care about their well-being both above and below the surface.

No matter your level of expertise, the value of accurate oxygen monitoring cannot be overstated. As you browse through the curated selection of O2 monitoring products, take time to consider how each option might fit into your current gear configuration and diving goals. Remember that water temperature, dive duration, and breathing gas composition can all influence your oxygen needs and monitoring requirements. For those seeking more in-depth information about the technology behind O2 sensors, or looking to explore a broader range of options, our dedicated Oxygen Sensors page offers additional resources and product listings. Spring is the perfect season to refresh your dive kit and ensure every component is up to the task—starting with the tools that keep you safe and aware at every depth. With the right O2 monitoring equipment, you can approach each dive with confidence, knowing you’re equipped to handle whatever the underwater environment may bring.