Ocean Reef NACS - Neptune Adjustable Communication Support
Ocean Reef NACS - Neptune Adjustable Communication Support is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Ocean Reef NACS - Neptune Adjustable Communication Support is backordered and will ship as soon as it is back in stock.
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Product Information
The Ocean Reef NACS (Neptune Adjustable Communication Support) is a patented adjustable mounting arm that attaches an OCEAN REEF communication unit, such as the GSM DC, GSM, or M-101A, to an Integrated Diving Mask (IDM), taking the weight of the comm unit off the mask strap and letting a diver fine tune its tilt and distance from the visor.
Who it is for
The NACS is built for divers already using an Ocean Reef IDM full face mask with a GSM style communication unit who want that unit supported independently of the mask strap rather than hanging off it. It suits divers running GSM DC, GSM, or M-101A units, and it is the support needed to install the GSM G.divers on an Extender Frame.
Key details
- Installs on the left side of the mask visor.
- Relieves the mask strap of the communication unit's weight and lets the strap slide freely through the buckle.
- Adjustable on two axes: tilt (inclination) and horizontal distance between the communication unit and the visor.
- Engineered to break or detach in case of entanglement, a built in safety feature.
- Ocean Reef describes the arm as light, sturdy, and durable, built to distribute the weight of the comm unit.
Compatibility and sizing
The NACS is designed for Ocean Reef IDM communication systems and supports GSM DC, GSM, and M-101A receiving units. It is also the mounting hardware needed to fit the GSM G.divers unit on an Extender Frame. A separate Foldable NACS (model OR025072), which folds inside the mask for storage, is published for Extender Frame setups.
DiveCatalog.com is an authorized Ocean Reef dealer and a dive shop in Irvine, California, operating since 2003. Call or chat with us at 888-701-4017 if you need help matching the NACS to your specific mask and communication unit.
- Visor side mounting: Installs on the left side of the mask visor.
- Patented Ocean Reef design: Mounts a GSM DC, GSM, or M-101A communication unit to an Ocean Reef IDM.
- Strap relief: Relieves the mask strap of the communication unit's weight.
- Smooth buckle action: Allows the mask strap to slide easily through the buckle.
- Two axis adjustment: Adjustable for tilt (inclination) and for horizontal distance between the communication unit and the visor.
- Entanglement safety: Engineered to break or detach if it becomes entangled.
- Required for GSM units: Per this listing, GSM communication models are used with the NACS.
- Durable build: Described by the manufacturer as light, sturdy, and durable, built to carry the comm unit's weight.
- Extender Frame compatibility: Needed to install the GSM G.divers unit on an Extender Frame.
| Brand | Ocean Reef |
| Product name | NACS, Neptune Adjustable Communication Support |
| SKU | 33054 |
| UPC / Barcode | 764500001065 |
| Mounting location | Left side of mask visor |
| Adjustability | Tilt (inclination) and horizontal distance |
| Safety feature | Breaks or detaches on entanglement |
| Compatible communication units | GSM DC, GSM, M-101A, GSM G.divers (on Extender Frame) |
| Compatible mask type | Ocean Reef IDM (Integrated Diving Mask) |
| Related variant | Foldable NACS for Extender, model OR025072 |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Do I need the NACS to use a GSM communication unit with my Ocean Reef mask?
The NACS is the support needed to install the GSM G.divers on an Extender Frame, and GSM units are mounted with it rather than the strap.
Where does the NACS attach on the mask?
The NACS installs on the left side of the mask visor on an Ocean Reef IDM. From there it supports the communication unit and can be adjusted for tilt and distance so the unit sits where you want it relative to the visor.
What is the difference between the NACS and the Foldable NACS?
The Foldable NACS (model OR025072) is a version built for the Extender Frame that folds inside the mask for storage.
Can the NACS fail safely if I get tangled in a line or net?
Yes. The NACS is engineered to break or detach in case of entanglement, which is a deliberate safety design so the communication unit's mount does not hold a diver fast to an obstruction.
