Walk Through Metal Detector Comparison Chart [All Models]

compare walk through security metal detectors

Complete Walk Through Metal Detector Comparison [2026]

Use this side-by-side comparison to evaluate every walk-through metal detector PTI carries. All pricing is current as of 2026. Click any model name to view its full product page.

ModelZonesSensitivity LevelsThroughputTSA CertADAPriceBest For
Zorpro 6 Zone60–999~30/minNoYes$2,176Small schools, budget buyers
Zorpro 18 Zone180–999~35/minNoYes$2,387Churches, offices, events
Zorpro 33 Zone330–999~40/minNoYes$3,287Schools, courthouses, events — best value
Garrett MZ 6100201–100~35/minNoYes$3,577Events, portable deployments
Fisher M-ScopePortableAdjustable~25/minNoYes$4,500Mobile security, temporary checkpoints
Garrett PD 6500i331–100~50/minYesYes$5,259Federal courthouses, airports
Garrett Paragon 66 Zone661–100~60/minYesYes$7,647Federal facilities, prisons, high-security

Zorpro vs. Garrett: Brand Comparison

FactorZorproGarrett
Price range$2,176–$3,287$3,577–$7,647
Federal certificationsNoYes (PD 6500i, Paragon)
Max zones available3366
Display typeColor touchscreenLED panel / touchscreen (varies)
Best value✅ YesAt premium tier
Law enforcement adoptionGrowingExtensive
Best forSchools, courthouses, events (non-federal)Federal, high-security, portable events

How to Choose by Zone Count

6 Zones

Basic detection — confirms the presence of metal but provides minimal body-location data. Appropriate for low-traffic single-entry points where speed of secondary screening is less critical. Best for small schools, community centers, small venues. Model: Zorpro 6 Zone ($2,176).

18–20 Zones

Provides body region data (upper/lower, left/right). A significant improvement over 6 zones for reducing false alarms and guiding secondary screening. Appropriate for churches, offices, and medium-traffic events. Models: Zorpro 18 Zone ($2,387), Garrett MZ 6100 ($3,577).

33 Zones

Precise body-location detection — pinpoints alarm to specific body region, dramatically reducing secondary screening time. The standard for schools, courthouses, and high-volume security checkpoints. Models: Zorpro 33 Zone ($3,287), Garrett PD 6500i ($5,259).

66 Zones

Maximum precision — double resolution of 33-zone units. Required for federal/TSA applications. Detects and pinpoints even small metallic items. Model: Garrett Paragon 66 Zone ($7,647).

How to Choose by Use Case

Use CaseRecommended ModelKey Reason
K-12 SchoolZorpro 33 ZoneHigh zone count reduces false alarms; price fits school budgets
State CourthouseZorpro 33 Zone33-zone precision; no federal cert needed
Federal CourthouseGarrett PD 6500iFederal certification required
Concert / FestivalGarrett MZ 6100Portable, quick setup, event-hardened
Church / House of WorshipZorpro 18 ZoneGood zone count, respectful operation, value price
Prison / CorrectionalGarrett Paragon 66Maximum precision and sensitivity
Mobile / TemporaryFisher M-ScopePortable, battery option, rapid deploy

Understanding the Specs

Zones

The number of independent horizontal detection layers. More zones = more precise body-location data = fewer false alarms. Not the same as sensitivity — a 6-zone detector can be highly sensitive, but it still can’t tell you WHERE on the body the metal is.

Sensitivity Levels

The range of detection threshold settings. A wider sensitivity range (0–999 vs. 1–100) gives operators more granular control over calibration. Higher sensitivity detects smaller objects but increases false alarm risk; lower sensitivity reduces false alarms but may miss small metallic items.

Throughput

People per minute that can be screened efficiently. Affected by false alarm rate, secondary screening speed, and lane width. Higher zone count generally allows higher throughput because secondary screening is faster and more targeted.

TSA / Federal Certification

Required for facilities regulated by federal standards (airports, federal courthouses, federal buildings). Certification involves testing to specific detection and false alarm standards. Only the Garrett PD 6500i and Paragon 66 in PTI’s lineup carry these certifications.

ADA Compliance

All PTI walk-through detectors can be configured for ADA-compliant checkpoint lanes. This typically requires maintaining a 32-inch clear width for wheelchair access and having a handheld wand protocol for individuals who cannot pass through the archway.

Frequently Asked Questions

What is the difference between 6-zone and 33-zone metal detectors?

A 6-zone detector tells you metal was detected somewhere on the person. A 33-zone detector tells you exactly which body region triggered the alarm — for example, “left hip, mid-torso.” This pinpoint information speeds secondary screening and dramatically reduces false alarm disruptions.

Which walk through metal detector is most accurate?

For precision body-location accuracy, the Garrett Paragon 66 Zone is the most accurate walk-through detector PTI carries. For detection accuracy (reliably detecting threats), all models perform well when properly calibrated. The Garrett PD 6500i and Paragon are certified to federal accuracy standards.

Can I use a walk through metal detector outdoors?

Most walk-through detectors are designed for indoor use. The Garrett MZ 6100 offers better weather resistance for semi-outdoor environments. For fully outdoor permanent installations, contact PTI for guidance on weatherproofing and interference management.

How do I compare metal detector specs for my specific facility?

Consider: (1) Daily throughput (how many people per day?), (2) Certification requirements (federal or not?), (3) Portability needs, (4) Budget. Use the table above to identify candidates, then contact PTI for a personalized recommendation.

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