Frequently Asked Questions

• Guard II Pro biometric trigger lock ×1
• USB admin key ×1
• Mechanical backup key ×1
• USB-C charging cable ×1
• User manual ×1

Guard II Pro uses a universal trigger-guard design that fits most modern firearms, including pistols, rifles, shotguns, and BB guns. A single unit secures one firearm at a time.

Fit varies by trigger-guard geometry — contact us if your model isn’t listed.

The cheap misreads people complain about come from optical sensors — the kind that take a picture of your fingerprint. Guard II Pro uses a 360° capacitive sensor that reads the electrical pattern of the ridges of your skin from any angle and matches in approx. 0.1 seconds. The sensor employs live-finger detection, and its algorithm updates your stored print every time you use it, with environmental compensation — so a paper cut or a season of dry skin doesn’t lock you out.

Validated performance:

• Dry, calloused fingers: adaptive sensitivity adjustment maintains 99%+ accuracy
• Cold temperatures: functional down to −22°F
• Hot temperatures: functional up to +149°F

We spent years of engineering making sure your Guard II Pro is as reliable in extreme conditions — when you need it the most.

No. The moment your fingerprint registers, the auto-eject mechanism releases the lock and pushes the two halves off the trigger guard automatically — nothing to unscrew, unthread, or put down.

The auto-eject makes unlocking and drawing one seamless motion when speed matters. No lid to open, no box to reach into.

Guard II Pro stores up to 20 fingerprints — enough for every adult in the house, or for different fingers under different conditions.

Adding a print requires the admin fingerprint or the USB admin key, so nobody can enroll themselves. And of course, a fingerprint that isn’t enrolled doesn’t open it.

Yes. Guard II Pro’s mount is reversible — you can lock the fingerprint-reader half to either side of your firearm, so it works left- or right-handed.

The recommended setup: position the fingerprint-reader half on the side of your draw hand, so unlocking and drawing are one seamless motion.

About 10 months per charge — or about 1,000 unlocks. The lock warns you at 15% battery, weeks before depletion, with a built-in alarm so you always know when to charge. A full charge takes about 2 hours on USB-C.

Yes. The locked state is fully mechanical — no power is needed to stay secure.

You’re not locked out. The lock warns you at 15% capacity — weeks before depletion — and the mechanical backup key opens it with no battery and no fingerprint, independent of power.

Yes. The capacitive sensor doesn’t need light to read a fingerprint — your firearm is ready in complete darkness by instinct alone, or unlock it discreetly in your purse so you’re prepared for any situation.

Guard II Pro’s body is built from reinforced steel and zinc alloy to withstand abuse. Guard II Pro has been accepted by the California Department of Justice as an Approved Firearm Safety Device — it has gone through rigorous testing in extreme conditions, including smashing, pulling, and picking.

Any unauthorized unlock attempt also triggers a loud alarm and a red strobe light — enough to scare the person away, or to let you know what’s happening.

There’s nothing to guess. With traditional locks, kids usually find the combination by peeking or guessing. Guard II Pro has no code and no key on the daily path — access is fingerprint only, and a fingerprint that isn’t enrolled doesn’t open the lock, period. No amount of peeking or guessing will give your kids access.

No — Guard II Pro is not a safe, and it’s not trying to be. It doesn’t enclose or anchor the firearm, so it doesn’t replace a theft-resistant safe. What it does do: it makes the trigger inaccessible to anyone whose fingerprint isn’t enrolled.

Validated performance:

• Cold temperatures: functional down to −22°F
• Hot temperatures: functional up to +149°F

We spent years of engineering making sure your Guard II Pro is as reliable in extreme conditions — when you need it the most.

Ships from Canada with US domestic fulfillment. Usually arrives in 3–5 days for US and Canada orders.

Orders shipped from Canada to the United States may be subject to duties or taxes at the time of delivery. Any such charges are the responsibility of the recipient, as required by U.S. customs regulations.

We offer a 30-day satisfaction guarantee from the ship date. Every unit also carries a 1-year warranty against defects in materials and workmanship.

We’ve invested years in engineering and testing the Guard II Pro, and we stand behind it completely. We’re confident that once you experience biometric security, you won’t go back to traditional locks.

To start a refund or warranty claim, email support@vonesafe.com.

Contact support@vonesafe.com. You’ll be assisted by V.One’s own team in Vancouver, Canada — the people who answer support have engineering backgrounds and work right beside the people who designed every V.One safety product.

V.One Safe products are designed to support responsible firearm storage and access control. They do not replace safe firearm handling, secure storage practices, or compliance with applicable laws.

The manufacturer and seller are not responsible for damages, losses, injuries, or expenses caused by improper installation, misuse, unauthorized modification, unsafe firearm handling, or failure to follow product instructions and applicable safety practices.

Before using any V.One Safe gun lock, make sure the firearm is unloaded. Keep the firearm pointed in the safest available direction while handling it.

Store firearms unloaded when not in use. Store ammunition separately, and lock firearms and ammunition separately whenever possible.

Never store firearms where children or unauthorized users can access them. Make sure every family member understands basic firearm safety rules.

Confirm that your V.One Safe is installed correctly before relying on it for storage. If you have questions about setup, fit, or operation, contact us at support@vonesafe.com before use.