Walk Through Metal Detector Brands: 6 Compared Honestly (2026)

The walk through metal detector brands that dominate commercial security are Garrett, CEIA, Evolv, Rapiscan, ZKTeco, and 2M Technology — and they are not interchangeable. The right choice depends on three things: whether you need NIJ-certified discrimination (courthouses, jails), weatherproofing for outdoor gates (stadiums, construction sites), or high-throughput screening on a school budget. This guide compares all six honestly — and 2M Technology can, because we sell and install walk-through units alongside x-ray scanners every week for courthouses, schools, and event venues, so we see exactly where each brand earns its price and where it doesn’t.

The Best Walk Through Metal Detector Brands at a Glance

1. Garrett PD 6500i — the incumbent standard

Ask any courthouse security director to name walk through metal detector brands and Garrett is usually the first answer. The Garrett PD 6500i is a popular model, as its 33-zone detection pinpoints where on the body a metal object sits, it meets the NIJ 0601.02 standard for law-enforcement metal detection, and it is offered in IP55 and IP65 versions. You’re paying for the track record: thousands of installed units at airports and government buildings mean predictable performance and easy operator hiring — most experienced screeners have already used one. The tradeoff is zone count: newer multi-zone designs offer more zones than the PD 6500i’s 33, so compare zone count against quoted pricing for your lane count rather than assuming either way.

2. CEIA SMD600 Plus — the high-discrimination tier

The CEIA SMD600 Plus is what high-security facilities buy when false alarms are more expensive than hardware. Its 60 dual-side zones with height indication, combined with CEIA’s magnetic-composition analysis, let it flag low-metal-content weapons while passing belts, keys, and shoe shanks — CEIA states compliance with NIJ 0601.02 across all security levels, including inmate screening in corrections settings; request the model’s test documentation for your procurement authority. The control unit is IP66-rated and CEIA offers an IP65 outdoor configuration, which matters at exposed gates. It’s typically the most expensive conventional detector on this list of walk through metal detector brands, and that’s the point: you buy CEIA when the cost of a missed low-metal weapon or a high nuisance-alarm rate exceeds the hardware premium.

3. Evolv Express — high throughput, verified caveats

Evolv Express replaced the single-file walk-through with an AI-sensor gateway people stream through without emptying pockets — genuinely faster at stadium scale, which is why it spread to arenas and over 800 schools. But this is the one brand where due diligence is mandatory when comparing walk through metal detector brands: in November 2024 the FTC took action against Evolv for overstating what the system detects, citing among other things a seven-inch knife that passed through undetected before a school stabbing. The settlement barred unsupported AI-detection claims and let certain K-12 customers cancel multi-year contracts. Evolv can still be the right tool for high-volume venues — but buy it on tested detection performance for the specific threat items you care about, not on marketing, and budget for the recurring subscription that conventional detectors don’t carry.

4. Rapiscan — the checkpoint-ecosystem play

Rapiscan is best known for x-ray screening lines at transport hubs, and its walk-through detectors are usually bought as part of that ecosystem — one vendor, one service contract, one operator interface family across the checkpoint. If your facility is already running Rapiscan baggage x-ray, adding its walk-through units simplifies procurement. If you’re not, there’s rarely a standalone reason to start here over Garrett or other walk through metal detector brands at the same tier.

5. ZKTeco — the budget tier

ZKTeco and similar import walk through metal detector brands own the bottom of the market: functional multi-zone detection at a fraction of Garrett/CEIA pricing. For an indoor lobby with light daily traffic and a guard who just needs a general alarm, they do the job. The points to evaluate before buying on price are discrimination quality (nuisance alarms from phones and belts), housing construction, and the depth of the US service network, which matters the first time a unit needs support before a big event. For outdoor gates or high daily cycles, ask the vendor for the housing rating, rated duty cycle and US service response time before choosing on price.

6. 2M Technology 2MWT series — 18 to 90 zones with an integrator attached

Our own 2MWT walk-through line spans 18, 24, 45, and 90-zone models, in indoor and outdoor-rated builds — the flagship 2MWT-O90Z is a 90-zone, IP65 weatherproof unit built for stadium gates, construction entrances, and other exposed locations where most competitors require a canopy. The lineup also includes portable fold-and-deploy models for event companies and combined temperature + metal detection gates. The honest positioning: we won’t claim the Garrett name recognition or CEIA’s corrections-grade discrimination pedigree. What we offer is a line that runs from 18 to 90 zones, outdoor-rated models in the 2MWT-O series (IP65 on the O90Z and O45Z, IP55 on the O18Z), portable units, and the thing the big walk through metal detector brands don’t ship in the box — a Texas-licensed integrator (B15309) who installs it, calibrates it for your entrance, trains your staff, and answers the phone afterward.

How to Choose From Walk Through Metal Detector Brands: Three Questions That Decide It

1. Is this checkpoint governed by a certification requirement? Courthouses, jails, and some government facilities specify NIJ-0601.02 compliance in procurement. If your RFP names the standard, you’re choosing between Garrett and CEIA tiers — this is also where our x-ray vs metal detector comparison for government buildings helps decide what belongs at each lane.

2. Is the entrance outdoors? Rain, dust, and temperature swings kill indoor-rated units. If the checkpoint is a stadium gate, fairground entrance, or construction site, filter the list to models rated for that exposure first — IP65 for exposed gates (CEIA’s IP65 outdoor configuration, Garrett’s IP65 version, 2M’s 2MWT-O90Z and O45Z; the IP55-rated O18Z suits covered or sheltered lanes) — and only then compare zones and price.

3. What does a missed item actually cost you? A school screening for weapons has a different risk profile than a warehouse screening for product theft. High-consequence screening justifies CEIA-tier discrimination; throughput-first venues weigh Evolv’s flow against its verified detection caveats; theft deterrence at an employee exit is well served by mid-tier multi-zone units. For school deployments specifically, our metal detectors for schools guide covers lane counts and funding sources.

Which Walk-Through Metal Detector Fits Which Facility

The right detector is decided by three things the facility controls: how many people must clear screening in the peak window, whether the lane is indoors or exposed to weather, and what the procurement authority will accept. The table below gives illustrative starting points for common facility types. Final zone count, sensitivity program and model are set per project after a throughput and site review, and 2M’s engineering team confirms model suitability before quoting.

A real reference point: a North Texas school district screens 850–1,100 students per campus inside a 20-minute arrival window with two 33-zone lanes per school. The full project is described on the walk-through metal detectors page.

The brands compared above fit the same grid: Garrett and CEIA are the incumbent choices for courthouse and corrections lanes, Evolv targets high-throughput venues on a subscription model, and ZKTeco the budget indoor case.

What to Ask Before You Buy a Walk-Through Metal Detector

Screening requirements depend on the facility, operating environment and procurement authority. Request model-specific performance documentation against the standard required for the project, applicable FCC compliance records, and TSA qualification only where relevant. References to standards here do not imply that any 2M product is independently certified or listed.

1. Performance standard and test documentation. Two performance standards are in use for walk-through metal detectors: NIJ Standard 0601.02 (National Institute of Justice, 2003), the long-standing law-enforcement and corrections benchmark, and ASTM F3566-22 (2022), the consensus performance specification and test method for walk-through detectors used in safety and security. Ask your procurement authority which one the project requires, then request the model’s test documentation against that standard.
2. FCC equipment authorization. Ask the vendor for the applicable FCC equipment-authorization documentation for the exact model.
3. TSA qualification, airports only. If the lane is an airport checkpoint, confirm the exact model appears on the current TSA list; for other facilities TSA qualification is not a requirement.
4. Zone count and alarm display. How many independent detection zones the unit has and whether the display shows the alarm height on the body. The ranges in the table above are starting points, not requirements.
5. Throughput at your sensitivity setting. Ask for a tested figure at the sensitivity program you will actually run, not the brochure maximum.
6. Indoor or outdoor rating. The ingress-protection rating of the housing if the lane is exposed; indoor-rated units are not weatherproofed, and exposure beyond the rated environment risks malfunction and a shortened service life.
7. Clear opening and accessibility. Confirm the clear passage width meets the accessibility requirement that applies to your facility.
8. Sensitivity programs and calibration support. Who calibrates the unit for your population (students, the public, staff), and how often.
9. Power and lane spacing. Mains or battery operation, and the spacing the manufacturer specifies between adjacent lanes to avoid interference.
10. Installation, training and service. Who installs, who trains the screeners, and the service response time. This is the integrator’s responsibility rather than the manufacturer’s.

Related guides: walk-through metal detector models by zone count and rating, metal detector systems for courthouses and schools, x-ray baggage screening to pair with a detector lane, and courthouse checkpoint design.

Walk Through Metal Detector Brands: FAQs