Walk Through Metal Detector Comparison Chart [All Models]

 

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.

Model	Zones	Sensitivity Levels	Throughput	TSA Cert	ADA	Price	Best For
Zorpro 6 Zone	6	0–999	~30/min	No	Yes	$2,176	Small schools, budget buyers
Zorpro 18 Zone	18	0–999	~35/min	No	Yes	$2,387	Churches, offices, events
Zorpro 33 Zone	33	0–999	~40/min	No	Yes	$3,287	Schools, courthouses, events — best value
Zorpro 18 Zone	20	1–100	~35/min	No	Yes	$2,387	Events, portable deployments
Fisher M-Scope	Portable	Adjustable	~25/min	No	Yes	$4,500	Mobile security, temporary checkpoints
Zorpro 33 Zone	33	1–100	~50/min	Yes	Yes	$3,287	Federal courthouses, airports
Ranger Intelliscan 33 Zone	66	1–100	~60/min	Yes	Yes	$4,188	Federal facilities, prisons, high-security

Zorpro vs. Ranger: Brand Comparison

Factor	Zorpro	Ranger
Price range	$2,176–$3,287	$2,387–$4,188
Federal certifications	No	Yes (PD 6500i, Paragon)
Max zones available	33	66
Display type	Color touchscreen	LED panel / touchscreen (varies)
Best value	✅ Yes	At premium tier
Law enforcement adoption	Growing	Extensive
Best for	Schools, 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), Zorpro 18 Zone ($2,387).

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), Zorpro 33 Zone ($3,287).

66 Zones

Maximum precision — double resolution of 33-zone units. Required for federal/TSA applications. Detects and pinpoints even small metallic items. Model: Ranger Intelliscan 33 Zone ($4,188).

How to Choose by Use Case

Use Case	Recommended Model	Key Reason
K-12 School	Zorpro 33 Zone	High zone count reduces false alarms; price fits school budgets
State Courthouse	Zorpro 33 Zone	33-zone precision; no federal cert needed
Federal Courthouse	Zorpro 33 Zone	Federal certification required
Concert / Festival	Zorpro 18 Zone	Portable, quick setup, event-hardened
Church / House of Worship	Zorpro 18 Zone	Good zone count, respectful operation, value price
Prison / Correctional	Ranger Intelliscan 33 Zone 66	Maximum precision and sensitivity
Mobile / Temporary	Fisher M-Scope	Portable, 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 Zorpro 33 Zone 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 Ranger Intelliscan 33 Zone is the most accurate walk-through detector PTI carries. For detection accuracy (reliably detecting threats), all models perform well when properly calibrated. The Zorpro 33 Zone 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 Zorpro 18 Zone 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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