Detect hidden wireless surveillance signals around you
Sentinel scans for active radio-frequency transmissions from common wireless cameras, listening devices and trackers, helping you investigate suspicious signals in rooms, vehicles and personal spaces.
Lawful use only. This product is supplied for lawful security, protective, investigative, and authorised monitoring use. You are responsible for ensuring that purchase, possession, deployment, recording, tracking, and monitoring comply with all applicable laws in your jurisdiction.
A working tool for investigating suspicious wireless activity.
Wireless cameras, GSM bugs and covert trackers are cheap, small, and increasingly common in hotel rooms, rentals, meeting rooms and vehicles. Consumer “bug detectors” simply flash on any RF energy, which produces near-constant false positives in normal environments.
A superheterodyne receiver sweeps 40 MHz – 3.8 GHz and classifies signals by type (GSM, LTE, Wi-Fi, Bluetooth, DECT, analog) instead of only reporting that energy exists. Directional narrowing helps you walk a transmission back to its source.
Executives and their protection teams, investigators, security consultants, journalists and any operator who needs a repeatable, documentable sweep rather than a novelty gadget.
- Superheterodyne receiver with an integrated frequency synthesizer — not a broadband diode circuit — enabling per-signal identification.
- Signal classification across GSM / 3G / LTE / Wi-Fi / Bluetooth / DECT / analog to cut down the false-positive rate that makes consumer detectors unusable.
- 1.0 – 1.5 s scan-and-analysis cycle across 40 MHz – 3.8 GHz, with directional source-narrowing.
- Surveillance mode with timestamped event logging (up to 200 registrations) for unattended overnight monitoring and review.
- Pocket-sized hardware (< 50 g, 77 × 43 × 18 mm), 5 – 14 h runtime, silent alerting.
- Lifetime product support from operators who know the equipment — setup, interpretation, and practical troubleshooting.
What Sentinel is designed to detect — and what it isn’t.
Real-world performance depends on distance, environment, transmission power, frequency, duty cycle, timing and operator technique. This matrix reflects what the equipment is built to investigate, not a guaranteed outcome for every scenario.
Datasheet.
Detection
SPEC · 01Operation
SPEC · 02Physical
SPEC · 03Where it operates.
Meeting room clearance
Sweep a conference room in under two minutes before sensitive discussions. Identify any transmitting device — bug, camera, or rogue phone — and locate it precisely.
Vehicle sweeps
GPS trackers and GSM bugs are routinely concealed under vehicles or inside cabins. The SENTINEL detects transmissions and the directional capability narrows the source within centimetres.
Executive travel
Pocket-sized for unobtrusive carry. Surveillance mode runs autonomously overnight in hotel rooms, logging every event with a timestamp for review the next morning.
BOUGHT IT ONCE. SUPPORTED FOREVER.
Every purchase includes product guidance from people who know the equipment, from setup questions through practical troubleshooting.
Available in pre-configured kits.
Explore the catalog.
Questions answered.
What is the Sentiras SENTINEL and what does it detect?
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The Sentiras SENTINEL is a superheterodyne RF sweep receiver for professional counter-surveillance checks. It scans 40 MHz to 3.8 GHz and classifies common transmissions such as GSM, LTE, Wi-Fi, Bluetooth, DECT, and analog signals. The goal is to distinguish likely surveillance-related transmissions from normal background RF activity.
Can SENTINEL locate hidden wireless cameras or GSM bugs?
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The Sentiras SENTINEL can detect and help narrow the source of active wireless transmitters, including many camera and bug types. Directional narrowing assists physical search in a room, vehicle, or office. Purely wired or powered-off devices with no RF transmission remain outside RF-detection scope.
How is SENTINEL different from basic RF bug detectors?
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The Sentiras SENTINEL uses superheterodyne analysis rather than simple broadband energy alerts. That approach reduces false positives by identifying signal type instead of only reporting that RF energy exists. It also logs detected events for later review, which supports auditability.
How long does a typical sweep take with the SENTINEL?
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The Sentiras SENTINEL completes scan-and-analysis cycles in about 1.0 to 1.5 seconds. Total sweep time still depends on environment size, signal density, and operator method. Most standard rooms can be checked quickly, while complex spaces may require slower, methodical passes.
Who is a good buyer fit for the Sentiras SENTINEL?
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The Sentiras SENTINEL is generally suited to executive protection teams, investigators, security consultants, and organizations handling sensitive meetings. It is not marketed as a consumer gadget for casual household use. Buyers typically need repeatable, documented sweep workflows.
What legal and compliance considerations apply to RF sweeps?
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The Sentiras SENTINEL should be used only for lawful security and privacy protection activities. Users must follow local laws, client permissions, and workplace policies before conducting scans in private or controlled spaces. Sentiras does not authorize unlawful surveillance, interception, or unauthorized access.
What are Sentinel's detection limits?
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Sentinel detects active radio-frequency transmissions between 40 MHz and 3.8 GHz. Devices that are powered off, only record locally without transmitting, or are purely wired (for example, some wired cameras and hidden microphones) will not produce an RF signature and are outside the scope of an RF-only sweep. Real-world detection also depends on distance to the transmitter, environment, transmission power, frequency, timing and operator technique.
When will my Sentinel ship and how long does delivery take?
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Orders are prepared from ready stock and a shipping confirmation with tracking is issued within 2–3 business days after payment. Transit time then depends on destination and courier. If anything about your order needs to be clarified you'll hear from support before it ships.
What are the returns, warranty and payment terms?
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Payment is handled through secure Stripe checkout with VAT included in the displayed price. Returns follow the terms on the Returns page, and every purchase includes lifetime product support from operators who know the equipment — setup guidance, interpretation help, and practical troubleshooting.