Used, Professionally Refurbished Kajeet RC400LX RayHunter IMSI Catcher Detector

RayHunter

$29.74 $120.00

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Used, Professionally Refurbished Kajeet RC400LX RayHunter IMSI Catcher Detector

$29.74 $120.00

Before You Order

Condition: Professionally refurbished Kajeet RC400L(X); inspected, flashed and tested.
Included: Hotspot, battery and back cover. USB-A to USB-C cable, power adapter, carry case and inactive SIM are included only when available.
Before use: USB-C charging and a SIM are required; no active plan is required for detection. Battery life is not guaranteed.

Shipping options and delivery estimates depend on your items and destination. Shipping information · Returns · Ask a question

Detection scope

RayHunter analyzes cellular signaling for suspicious behavior associated with possible cell-site simulators. Alerts require investigation: false positives are possible, and no alert does not establish that an area is free of surveillance. Detection does not prevent tracking or protect nearby phones.

Firmware and use

This hotspot is supplied with RayHunter installed and tested. Review the firmware option selected before ordering. RayHunter is an open-source project from the Electronic Frontier Foundation (EFF); STS Collective supplies the configured hardware and is not affiliated with EFF.

Setup and compatibility

Install a compatible SIM and charge the device before use. A paid service plan is not required for RayHunter detection; using the device as an internet hotspot requires compatible cellular service. Check the included-items list above and supply any accessories marked as excluded or available only when in stock.

Use the local RayHunter web dashboard to review logs and settings. Cellular compatibility depends on the hardware and supported network bands; ask us before ordering if you are unsure about your location.

❤️ Supporting Digital Rights

STS Technologies donates 10% of profits from RayHunter devices to the Electronic Frontier Foundation (EFF) to support privacy, security research, and anti-surveillance advocacy.

Support and returns

Contact us for setup help, firmware questions or return instructions. Returns are accepted within 30 days of delivery. Return shipping is covered only for defective items. Refund returns and order cancellations have a minimum 3% fee; the restocking fee is waived when you choose a replacement. See the store return policy for details.

Setup guides and downloads

Download your free PDF guide for setup, power requirements, troubleshooting and documentation links. Save a copy for offline reference.

Download RayHunter: first use (PDF)
Download DagShell: companion guide (PDF) - for the RayHunter + DagShell option only

Project documentation

Use the instructions for your exact hardware and installed firmware version. Setup help: support@stscollective.com.

Original project, developer, and DIY resources

DIY installation from source: Rayhunter source installation guide

These links identify the upstream project, its documentation, and available self-installation or reprogramming information. STS Collective provides prepared hardware for customers who prefer not to assemble or flash a device themselves.

Hardware, firmware, compatibility, testing, and support

Hardware: RayHunter IMSI Catcher Detector , Kajeet RC400LX 4G LTE Hotspot , Professionally Refurbished & Pre-Installed
Firmware: RayHunter, DagShell is the firmware or software path identified above. The listing states that the image is installed or preloaded.
Compatibility: Requires the exact hotspot model, carrier or band support, power, and firmware combination stated above.
Testing: The listing states that this configuration is tested before shipment.
Setup and DIY: Use the project, setup, and DIY references already included in this description. Follow the guide for the exact hardware and firmware. Project or setup documentation 1 Project or setup documentation 2 Project or setup documentation 3
Support: Contact support@stscollective.com for setup and product questions.
Lawful use: Use only on hardware, networks, cards, radio bands, and systems you own or have explicit permission to test. Follow applicable laws, platform rules, privacy rules, and radio regulations. Do not access, copy, interfere with, or disrupt other people's systems.

DIY flashing option

Flashing your own compatible device is usually manageable when you follow the project guide. STS Collective provides a ready-to-use flashed device for customers who prefer convenience. You do not need to buy a flashed unit to use the project.

Use the guide for your exact board and selected firmware:

Confirm the board revision, firmware target, power requirements, and current release before flashing. Reflashing replaces the installed firmware and may erase settings.