Underwater Signal Transmitters

Dive Alert Plus v2

40 reviews

SKU: AQUDPV3

^$91.95

+ wishlist

In Stock

DESCRIPTION

A small and lightweight signaling device that emits a piercingly loud sound both underwater and on the surface.

Pros

Can be used both underwater and on the surface
Powerful and attention-grabbing sound
Easy to install and use
Versatile and effective signaling device
Reliable and good customer service

Lazer-Stik Battery Powered Marker Light, Constant-On

38 reviews

SKU: AQULSBL

^$18.95

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In Stock

DESCRIPTION

A reusable and eco-friendly marker light with high visibility up to 1500 feet, suitable for divers.

Pros

Highly visible and bright light
Inexpensive and good value
Easy to use and waterproof
Versatile and lightweight
Long-lasting and reliable

Suunto Tank POD Transmitter for EON/D5 Dive Computer

9 reviews

SKU: SQTPOD

^$439.95

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In Stock

DESCRIPTION

A wireless tank pressure transmitter that provides a quick and easy view of tank pressure for Suunto EON/D5 Dive Computers.

Nautilus Life-Line Marine Rescue GPS

8 reviews

SKU: AQUNLMR

~~$244.99~~ Save: $45.99 (19%)

^$199

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In Stock

DESCRIPTION

A waterproof and durable Marine Rescue GPS that sends individual and relay distress alerts.

Mares LED Tank Module

8 reviews

SKU: MRSQT

^$339.95

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In Stock

DESCRIPTION

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

Oceanic Transmitter, Black

5 reviews

SKU: OCNAT1T

^$399.95

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In Stock

DESCRIPTION

A streamlined black transmitter with ATR and DTR features, easy installation, and replaceable batteries.

Ocean Reef Snorkie Talkie for Aria Full Face Mask

4 reviews

SKU: OEDST

^$79.95

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In Stock

DESCRIPTION

A compact and waterproof communication unit designed for the Aria full face mask, allowing surface voice communication.

Scubapro Hud Sport Dive Computer with Smart + Pro Transmitter

3 reviews

SKU: SCPHSPT

~~$999~~ Save: $55 (6%)

^$944

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In Stock

DESCRIPTION

A revolutionary mask-mounted dive computer with near-eye optics, wireless air integration, and advanced features.

Scubapro Transmitter Smart + Pro

3 reviews

SKU: SCPTSP

~~$369~~ Save: $55 (15%)

^$314

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In Stock

DESCRIPTION

A low-profile smart transmitter with air integration, built-in LED, and pressure display up to 4350 psi.

Shearwater Tern TX Wrist Dive Computer with AI Transmitter

1 reviews

SKU: SWTTRNXC

^$1145

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In Stock

DESCRIPTION

A modern, sleek wrist dive computer with AI transmitter for reliable, air-integrated diving with next-gen tech intelligence.

Ocean Reef Surface Unit and Snorkie Talkie

1 reviews

SKU: OEDSTPKG

~~$112.90~~ Save: $15.90 (14%)

^$97

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In Stock

DESCRIPTION

A complete underwater and surface communication system with easy installation and a waterproof rating of IP68.

Garmin Descent T2 Transceiver

1 reviews

SKU: GRMDT2T

^$499.99

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In Stock

DESCRIPTION

A dive-rated transceiver that tracks up to 8 tanks and allows diver-to-diver messaging with compatible dive computers.

Shearwater Swift Next Gen Smart AI Transmitter

1 reviews

SKU: SWTT

^$400

+ wishlist

In Stock

DESCRIPTION

A next-gen smart AI transmitter that offers reliable multi-transmitter use, 300 dive hours, and instant LED feedback.

Nautilus Lifeline Marine Rescue GPS with Neoprene Pouch

SKU: AQUNLMRA

^$219.99

+ wishlist

In Stock

DESCRIPTION

An easy-to-use, waterproof marine rescue GPS with a durable neoprene pouch for secure attachment.

Garmin Descent Mk3i 43mm Dive Computer with T2 Transmitter, Carbon Gray DLC Titanium/Black Silicone Band

SKU: GRMDMK43B

~~$1899.98~~ Save: $250 (13%)

^$1649.98

+ wishlist

In Stock

DESCRIPTION

A durable and feature-rich dive computer with a long-lasting battery life and superior positional accuracy.

Buddy Phone for Full Face Mask, 2 Channels

SKU: OTSBPG

^$999

+ wishlist

In Stock

DESCRIPTION

A digital ultrasonic communicator with 2 channels for clear speech between divers and surface, with a 500m range.

Garmin Descent X50i Dive Computer with T2 Transceiver

1 reviews

SKU: GRMDX50IC

~~$1999.98~~ Save: $250 (13%)

^$1749.98

+ wishlist

In Stock

DESCRIPTION

A 3" vibrant color touchscreen dive computer with sonar messaging and integrated tank pressure monitoring.

Garmin Descent Mk3i 43mm Dive Computer with T2 Transmitter, Bronze PVD Titanium/French Gray Silicone Band

SKU: GRMDMK43F

~~$1899.98~~ Save: $250 (13%)

^$1649.98

+ wishlist

In Stock

DESCRIPTION

A dive computer and transmitter set with GPS, ABC sensors, and 100-hour battery life, rated for 20 ATM.

Garmin Descent Mk3i 51mm Dive Computer with T2 Transmitter, Carbon Gray DLC Titanium/Black Silicone Band

SKU: GRMDMK51BP

~~$2099.98~~ Save: $250 (12%)

^$1849.98

+ wishlist

In Stock

DESCRIPTION

A durable, feature-rich dive computer with GPS, bathymetric maps, and a long-lasting battery.

Garmin Descent X50i Dive Computer

SKU: GRMDX50I

~~$1499.99~~ Save: $250 (17%)

^$1249.99

+ wishlist

In Stock

DESCRIPTION

A 3-inch touchscreen dive computer with sapphire lens, 20 ATM rating, and SubWave messaging technology.

DiveVolk SeaLink Contact Type Underwater Wifi Signal Transmitter

SKU: DVKSCT

^$199

+ wishlist

In Stock

DESCRIPTION

A revolutionary device that connects your smartphone and camera underwater for seamless photography and monitoring.

Garmin Descent Mk3i 51mm Dive Computer with T2 Transmitter, Carbon Gray DLC Titanium/Titanium Band

SKU: GRMDMK51TP

~~$2299.98~~ Save: $250 (11%)

^$2049.98

+ wishlist

In Stock

DESCRIPTION

A durable, feature-rich dive computer with GPS, ABC sensors, and DiveView maps, paired with a reliable transmitter.

Aqualung i770R TX Dive Computer with Transmitter, White/Petrol

SKU: UDRIT17

~~$1099~~ Save: $449.01 (41%)

^$649.99

+ wishlist

In Stock

DESCRIPTION

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

Seac Transmitter Bluetooth For Tablet Computer

SKU: SECTBT

~~$319~~ Save: $45 (14%)

^$274

+ wishlist

In Stock

DESCRIPTION

A compact Bluetooth transmitter providing real-time tank pressure data with multi-color LED alerts for divers.

Apeks Wireless Transmitter

SKU: APXT2CK

^$375

+ wishlist

In Stock

DESCRIPTION

A Wireless transmitter for streamlined diving with secure pairing and reliable Apeks compatibility.

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Underwater Signal Transmitters

Underwater signal transmitters have become indispensable tools for divers, instructors, and underwater explorers seeking to enhance communication and safety beneath the surface. As autumn ushers in cooler waters and shifting visibility, the need for reliable, clear communication grows even more crucial. These devices bridge the silent world of the deep, allowing divers to transmit messages, alerts, or location signals without relying on hand gestures or line-of-sight signals, which can be easily missed in murky or low-light conditions. Whether you're navigating a kelp forest with limited visibility, exploring a sprawling wreck, or conducting a group dive with students, signal transmitters offer peace of mind and efficiency. They are especially valued by dive leaders, technical divers, and underwater photographers who often need to coordinate complex maneuvers or alert their buddies to points of interest or potential hazards. Even recreational divers can benefit, as signal transmitters provide an added layer of safety when exploring new or challenging sites.

When considering the purchase of an underwater signal transmitter, it's important to think about the specific environments and scenarios in which you'll be diving. Range, battery life, ease of use with gloved hands, and compatibility with your existing gear are all factors that can impact your experience. For those who dive year-round or in varying conditions, durability and water resistance at different depths become key considerations. Some transmitters are designed for short-range buddy communication, while others are equipped for group coordination or emergency signaling over greater distances. If you frequently travel or dive with different groups, portability and universal compatibility may also influence your choice. Signal transmitters make thoughtful gifts for the diver in your life, especially as the holidays approach or as a practical upgrade for a dive buddy who values safety and communication. Imagine presenting a fellow enthusiast with a device that not only enhances their underwater experience but also helps ensure their well-being on every dive.

For divers who are meticulous about their gear setup, pairing signal transmitters with secure, dependable accessories is essential. Ensuring your transmitter is firmly attached and always within reach can make all the difference during a critical moment underwater. Many divers opt to pair their devices with robust bands or mounting solutions that can withstand the rigors of saltwater and frequent use. For those seeking trusted options, our collection of Reliable Underwater Bands offers a variety of solutions designed to keep your equipment safe and accessible. As you prepare for your next underwater adventure—whether it's a crisp autumn shore dive or a warm-water getaway—investing in quality signal transmitters and the right accessories ensures you stay connected, confident, and ready for whatever the depths may bring.