Helm Guardian Lock - Marine GPS Theft Deterrent Device
Protect your expensive marine electronics with the Helm Guardian Lock. This theft deterrent device gets placed over your marine display(s) when the boat is not in use to prevent thieves from stealing it. High quality anodized aluminum.
Helm Guardian
Buy With Confidence - Authorized Dealer
Sku :
HEL-UNI-LOCKBarcode :
UNI-LOCK
100% Brand new, authorized dealer
90 Day Returns on most items
Free delivery on most orders
Do you store your boat in an unattended storage lot or at a marina? Do you have expensive marine electronics displays on your boat? The ultimate bummer is arriving at your boat for a nice day on the water to find that your electronics displays have been stolen. This scenario plays out over and over. Marine Electronics theft is a major problem. Install a Helm Guardian Lock, to make sure thieves pass right over your boat and find another easier target.
The Helm Guardian Lock is an anodized billet aluminum bar/assembly that gets placed over your marine electronics display when the boat is not being used. It simply slides into place and then gets locked with the push of a button. Removal is just as easy. All that is left behind when the Helm Guardian Lock is removed are two small anodized aluminum buttons about the size of a snap, to keep your dash looking clean. Once installed and locked into place, it is impossible to remove with basic tools or in a timely manner, even if a thief gains access to the back of your dash.
A Helm Guardian Lock is one thing a thief will not want to deal with when trying to be fast and quiet.
The Helm Guardian Lock will fit all marine electronics that are flush mounted with a height off the dash less than 22.5mm or .9". This is basically everything currently on the market except for Humminbird or the Lowrance Elite Series. Brands it will fit include:
- Simrad NSS Evo2
- Simrad NSS Evo3
- Simrad NSS Evo3S
- Lowrance HDS Live
- Raymarine Axiom (All Axiom variants)
- Raymarine C & E Series (Classic and Wide)
- All Garmin Echomap Plus and UHD units
- All Garmin GPSMAP units
- All Furuno Navnet Units since the VX2, not including VX2
- Many other units*
| Brand | Helm Guardian |
BEST IN CLASS MARINE ELECTRONICS SALES, SERVICE, AND INSTALLATION SINCE 2002
BOE Marine is the premier choice for Marine Electronic sales, installation, and service in Maryland, North Carolina and Florida. We are an authorized dealer for all major brands, specializing in electronics, safety, navigation, entertainment, communications, and much more.
At BOE Marine, we specialize in providing top-tier marine electronics solutions for boaters, anglers, and yachting enthusiasts nationwide. Our team of certified marine electronics technicians delivers expert installation, troubleshooting, and support for cutting-edge systems including radar, sonar, chartplotters, GPS navigation, autopilot, marine audio, and communication equipment. Whether you’re upgrading your fishing vessel with tournament-ready technology, outfitting a luxury yacht with advanced connectivity, or simply need reliable repairs, BOE Marine offers the knowledge and precision to keep your time on the water safe and enjoyable.
Beyond installations, we are a trusted source for marine electronics sales and consultation. Our extensive online store features products from leading brands such as Garmin, Simrad, Raymarine, Furuno, and JL Audio, ensuring customers have access to the latest innovations in boating technology. We provide personalized guidance to help boat owners select the right gear, backed by competitive pricing and expert advice. From single-component upgrades to complete vessel electronics packages, BOE Marine is your one-stop partner for all things marine electronics.
Mobile Service in Annapolis/Kent Island | Fort Lauderdale | Stuart, FL | Lake Norman
Click Here to Book Mobile Service/Installations
Licensed - Bonded - Insured
NMEA & ABYC Certified
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Product Questions
Ask a QuestionThey are 14" x 1.5"
Answered by Jim Maier on 2026-03-03Hey Ryan, specs like dimensions are usually in the product description. If it's not listed, email [email protected] with the SKU and we'll dig up the datasheet.
Answered by Jim Maier on 2026-03-14Hey Ryan, you are welcome! Let us know if you need anything else.
Answered by Jim Maier on 2026-04-10They will work on 943's but they are all keyed differently
Answered by Jim Maier on 2026-03-03Hey Ryan, stock changes daily. Email [email protected] with your zip code and we'll check live inventory and give you an ETA.
Answered by Jim Maier on 2026-03-14Hey Ryan, stock changes daily. Email [email protected] with your zip code and we will check live inventory and ETA.
Answered by Jim Maier on 2026-04-10Yes, this fits a 8612 perfectly. We just go more in and will be shipping soon.
Answered by Jim Maier on 2026-02-04Hey Abe, thanks for asking about Helm Guardian Lock - Marine GPS Theft Deterrent Device. Email [email protected] and we'll get you the details.
Answered by Jim Maier on 2026-03-15Hey Abe, for Garmin compatibility, email [email protected] with your unit model and we will confirm.
Answered by Jim Maier on 2026-04-1011.5" wide by 7/8" high under the bar.
Answered by Jim Maier on 2026-01-22Hey Eugene, installation depends on your boat setup. We do installs at our Stevensville shop—email [email protected] to schedule.
Answered by Jim Maier on 2026-03-15Hey Eugene, shipping cost depends on your location. Email [email protected] with your zip code and we will quote it.
Answered by Jim Maier on 2026-04-10This material is solid aluminum. It would not come off easily. We have had customers that are really happy with them. This product would really slow someone down while trying to steal your graph.
Answered by Administrator on 2025-12-15We carry Helm Guardian Lock - Marine GPS Theft Deterrent Device - part number HEL-UNI-LOCK. If you need more details, email [email protected].
Answered by Jim Maier on 2026-04-10Hey Eduardo, compatibility depends on your specific setup. Email [email protected] with your model numbers and we will check.
Answered by Jim Maier on 2026-04-10This photo you see here is of it installed. There are several photos on the product page showing it in place, and removed, and videos to show it as well. If you are wondering how the ""buttons"" are installed on the dash, that is just with a thru-bolt for each botton. Requires a small hole in your dash for each of the two buttons, with an elongated nut on the back.
Answered by Administrator on 2025-12-15They all have different keys.
Answered by Administrator on 2025-12-15Yes, it will work and protect a Garmin 8610. Try it out!
Answered by Administrator on 2025-12-15No answer yet.
No it does not fit the Garmin GPSMap 8616
Answered by Administrator on 2025-12-15I just tested this on the Humminbird Apex that we have flush mounted with the in-dash mounting kit and this will work with that depth. There was no interference with the thickness.
Answered by Administrator on 2025-12-15Hey Jeff, installation depends on your boat setup. We do installs at our Stevensville shop—email [email protected] to schedule.
Answered by Jim Maier on 2026-04-10If the unit is flush in the dash, there is no need for the lock. If the unit is surface mounted with a suncover, it will work as long as you have room above and below the unit to mount the lock.
Answered by Administrator on 2025-12-15Installation depends on your boat setup. We do installs at our Stevensville shop—email [email protected] to schedule.
Answered by Jim Maier on 2026-04-10Hey David, installation depends on your boat setup. We do installs at our Stevensville shop—email [email protected] to schedule.
Answered by Jim Maier on 2026-04-10Hey MARC, we can give you a quote. Email [email protected] with the product and your quantity and we will get you pricing.
Answered by Jim Maier on 2026-04-10Yes, this will fit your 16"" unit.
Answered by Administrator on 2025-12-15Compatibility depends on your specific setup. Email [email protected] with your model numbers and we will check.
Answered by Jim Maier on 2026-04-10Hey Jp, for Garmin compatibility, email [email protected] with your unit model and we will confirm.
Answered by Jim Maier on 2026-04-10