Premium Handheld Explosives Trace Detector

Fido® X4

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The Fido X4 is a premium handheld explosives trace detector (ETD) that delivers unmatched sensitivity for a broad range of explosives, so you can easily detect threats at levels others can’t. Next generation FLIR TrueTrace® detection technology features a new five-channel sensor array that delivers expanded threat coverage, enhanced sensitivity, and identification in a wide range of environmental conditions. The simplified user interface features onboard video tutorials, user prompts, and color- coded alarms with strength indicators so you can operate quickly and decisively. Analysis and reporting of results are made simple through multiple modern connectivity options, allowing critical data to be shared quickly. From high-volume checkpoint and randomized screenings to foot patrol and standoff operations, Fido X4 is ready to go when and where you need it.

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Ready Whenever, Wherever

  • Next Level Detection

    Next generation Teledyne FLIR TrueTrace® detection technology features a new five-channel sensor array that delivers expanded threat coverage, enhanced sensitivity, and specific threat identification

  • Operationally Available

    Intuitive interface dramatically reduces training burden and increases end-user adoption and retention; onboard video tutorials, user prompts, and color-coded alarms with strength indicators help operators act quickly and decisively

  • Designed For The Mission At Hand

    Light weight 3.2 lbs, up to 16-hour continuous operation with two hot-swappable batteries, IP54-rated, and MIL-STD-810G compliant so operators can confidently complete their mission in a wide range of environmental conditions

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Input Voltage
100-240 VAC (wall adapter supplied)
System Overview
Battery Specification
Up to 16-hour mission time; two rechargeable and hot-swappable Li-ion batteries, each lasting up to 8 hours
Enclosure & Protection
IP54-rated, molded magnesium and polymer composite casing with anti-corrosive coating
Teledyne FLIR TrueTrace®; five-channel fluorescence technology; no radioactive source
Detects military, conventional, homemade, and liquid explosives
Deployment Options
Unmanned Platform Integration
UGV hardware kit includes mounting bracket, inlet and screen protection, and battery port cover. PackBot® Integration Kit in development for 2020.
Operating Temp & Humidity
32 to 104 °F (0 to 40 °C) / 5% to 95% non-condensing
ASTM™ E2520
Environmental & Approvals
14 to 122 °F (-10 to 50 °C)
Physical Features
Dimensions (L x W x H)
14.5 x 4.5 x 2.8 in (37.0 x 11.5 x 7.0 cm) - with battery
3.2 lbs (1.5 kg)
Start Up Time
3 minutes from cold; <10 seconds from sleep
Sampling & Analysis
Clear Down Time
Less than 30 seconds
Sample Acquisition
Swipes for particle collection and surface sampling; direct vapor for bottled liquids and UGV-based missions
Sample Phase
Trace particulate and vapor
Time to Alarm
10-25 seconds
System Interface
USB-C (Drive and Link modes), toggleable Wi-Fi, and Bluetooth
Data Management
On-device report generation; export to mass storage
Data Storage
3,500 hours of continuous data logging
Display & Alerts
Visible, audible, and haptic (vibration) alerts; vivid, sunlight-readable color display (32k colors)
Language translation available worldwide
User Levels
Operator, Administrator, and UGV mode
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Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

Fido® X4