CAN-Guard Probe with its orange clip-on housing open to show the sensor board, attached to a twisted-pair cable and connector.

CAN-Guard Probe: read CAN bus data without touching a wire

Monitor your vehicle’s CAN-Bus system without making physical contact. CAN-Guard ensures zero intrusion, offering real-time insights while eliminating risks to your equipment’s warranty and cybersecurity.

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No plugs. No wires. No compromises. Just Secure Data Acquisition

CAN-Guard is not just a device; it's peace of mind. Engineered for precision and safety, it captures data emitted as radiowaves from CAN-Bus wires, transforming them into actionable insights while protecting your equipment internal integrity & safety

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Illustration of CAN-Guard Probe closed around two CAN bus wires, reading their signals without touching the conductors.
No plugs. No wires. No compromises. Just Secure Data Acquisition.

As vehicles grow smarter, more connected, and increasingly exposed to cyber threats, especially across bus and truck fleets, a modern data strategy must value security as highly as insight. The Capte CAN-Guard Probe delivers exactly that: a safe, non-invasive vehicle data reader offering pure, read‑only access to any CAN bus network, including proprietary systems, without affecting vehicle operation or jeopardizing warranty integrity.

Read and Protect Every Signal without Touching a Wire

The CAN‑Guard Probe securely monitors vehicle signals without physical contact or system intrusion, installing in seconds by clipping onto the CAN bus wires and connecting to the WeCapte v6x for fast, fleet‑wide deployment. Paired with the right software, it instantly unlocks key metrics such as engine performance, fuel use, fault codes, driver behavior, and maintenance alerts, while Capte‑Cloud decodes and visualizes the raw CAN data. Together, the Probe and v6x deliver a powerful, scalable, and secure fleet‑monitoring solution

Cybersecurity by Design: No Splicing, No Vulnerabilities

The CAN‑Guard Probe offers a secure, non‑intrusive alternative to hardwired telematics by eliminating wire cutting, port access, or any physical modification, closing off pathways for hackers to rewrite codes, inject commands, or tamper with vehicle systems. Its passive, one‑way data capture preserves vehicle integrity, prevents unauthorized interference, maintains OEM warranty compliance, and protects fleets from cyber threats. With R10 certification for full electromagnetic compatibility, it delivers a safe, compliant, and highly reliable solution for modern, connected vehicle environments.

CAN-Guard Probe clipped onto a vehicle's CAN bus wiring next to a brake control unit, with its status LED lit.
Main features

System-Level Benefits that Scale with Your Fleet

The CAN-Guard Probe isn’t just a hardware device, but rather part of a smarter, more sophisticated and safer fleet ecosystem. When paired with the WeCapte v6x, it delivers powerful system-level benefits and represents a major leap forward over legacy vehicle data readers:

  • End-to-end cybersecurity: Passive data capture and secure transmission eliminate external command risks  
  • Fleet-wide scalability: Fast, non-intrusive installation across vehicles of all types, size and weight
  • Warranty-safe monitoring: No wire splicing or ECU access means OEM integrity is preserved
  • Real-time visibility: Continuous data streams enable proactive maintenance, and performance and compliance tracking
  • Minimal downtime: Quick install and removal with no disruption to fleet operations
  • R10 certified: Meets international standards for EMC and safe integration  
  • Helps prevent signal interference that could compromise vehicle control or safety systems
  • Ensures components meet OEM and regulatory standards for integration

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Main features

Main features

Help Center

Frequently Asked Questions

Straight answers about setup, compatibility, and what to expect — pulled from the questions we hear most from operators.

CAN‑Guard uses a passive, one‑way architecture that enhances cybersecurity for connected equipment by preventing external commands, unauthorized reprogramming or signal injection. It eliminates risks associated with wire splicing, diagnostic port access and direct electronic control unit (ECU) connections, supporting secure CAN bus access across fleet operations.

CAN‑Guard is R10 certified for electromagnetic compatibility (EMC), meeting international standards for safe integration in vehicles, industrial environments and off‑highway applications. This certification supports compliant, read‑only CAN monitoring across mixed fleets and high‑security operations.

CAN‑Guard passively replicates CAN bus signal traffic to support real‑time equipment monitoring, fleet diagnostics and performance visibility. Its read‑only architecture ensures safe CAN data capture without injecting messages, altering timing or affecting equipment behavior, making it a reliable tool for connected‑fleet operations.

CAN‑Guard clips directly onto the existing CAN bus wiring, enabling fast, passive installation for mixed fleets and telematics deployments. It creates a read‑only replica of CAN traffic without wire splicing or permanent modifications, making it ideal for routine maintenance, system integration and warranty‑sensitive assets.

CAN‑Guard supports any system using standard Controller Area Network (CAN) 2.0A/2.0B protocols, making it suitable for industrial equipment, off‑highway machinery, commercial vehicles and embedded control systems. It connects directly to existing CAN wiring for secure, read‑only data acquisition without changes to the vehicle’s wiring bundles.

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