FIDO X4 handheld explosives detection system

Handheld explosives detector for Vapor and Trace Detection.

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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.


Expanded threat detection with best-in-class sensitivity from FLIR TrueTrace® Technology

  • Detect a wide range of explosives at nanogram to sub-nanogram levels, including Nitroaromatics, Nitramines, Nitrate-esters, Nitrosamines, Plastic Explosives, Smokeless Powders, and Peroxides
  • Gain actionable intelligence through identification of threats in as little as ten seconds
  • Particulate sampling mode for high-throughput checkpoint or randomized screening; vapor sampling mode for UGV missions or handheld bottle and container liquid screening


Intuitive interface dramatically reduces training burden and increases end-user adoption and retention

• Learn basic operation and start screening quickly with on-device video tutorials and on-screen user prompts that provide step-by-step instruction

• Easily interpret results with clear, color-coded alarms, and strength indicators

• Power, firmware updates, data transfer, and future reach back capability with Bluetooth®, Wi-Fi, and USB-C connectivity options

Designed for extended operations in a wide range of environmental conditions

• Light (1.5 kg) and ergonomically designed to minimize operator fatigue during high throughput screening scenarios

• Up to 16-hour mission time with two 8-hour, hot-swappable batteries included

• IP54-rated for dust ingress and water resistance

• MIL-STD-810G compliant for shock, vibration, temperature, and humidity; one meter drop-tested

Download Datasheet

FIDO X4 Video clip