X11 Bug and Camera Detector
Discover the X11 bug detector from Spreest, which will allow you to check if someone is spying on or tracking you.
The built-in signal display will immediately show if a suspicious signal has appeared in your room, office, or car.
It scans the entire range of 1 MHz – 12 GHz, and two antennas – radio and magnetic – track everything: bugs, Wi-Fi cameras, GPS locators, AirTags, Bluetooth locators, even when transmitters are dormant, in a rare data transmission mode.
When approaching a device, the 15-level alarm flashes LEDs, buzzes, or discreetly vibrates, making it easy to pinpoint the source. On the display, you also see real-time waveform, which helps distinguish a continuous Wi-Fi stream from short cellular network pulses emitted by locators.
Key features
- Ultra-wide range 1 MHz – 12 GHz: One device replaces several detectors – it detects GSM / 3G / 4G bugs, Wi-Fi cameras, Bluetooth Low Energy, 5.8 GHz transmitters, and sub-GHz devices (LoRa, Sigfox).
- Sensitivity ≤ 0.03 mW (-73 dBm): Allows identification of even dormant trackers that "wake up" once every few hours to send a short data packet.
- Dual-Mode: RF + Magnetic: You will detect a transmitter even if it is turned off – the "searchlight" probe reacts to micro-magnets and steel inserts in the tracker's casing.
- 1-Click Automatic Calibration: The detector automatically adjusts sensitivity to conditions: a glass-facade office, an underground parking lot, or a truck cabin.
- LCD display with real-time waveform: You instantly see the signal characteristics – you can distinguish a continuous Wi-Fi stream from short LTE-M network pulses.
- 15-level LED / sound / vibration signaling: Discrete "silent" mode for conference room checks or a loud alarm for quick vehicle search in a workshop.
- Manual sensitivity adjustment knob: allows precise adjustment and graph stretching (default 0.5 ms)
- Anodized aluminum casing: Resistant to shocks and EMI interference, yet lightweight.
The device can identify
- GSM/3G/4G/5G bugs: Cellular signaling in the 800 MHz – 3 GHz band, detection up to 15 m².
- Wireless Wi-Fi cameras (2.4 GHz): Streaming up to 10 m² (10 mW camera).
- Miniature Wi-Fi cameras (5.8 GHz): Streaming up to 8 m² (5 mW camera).
- Analog cameras (1.2 GHz): Transmission up to 10 m² (10 mW transmitter).
- DECT bugs: 1.9 GHz standard – detection of hidden bases up to 12 m².
- GPS locators: Various models, satellite signal – module detection up to 8 m².
- Bluetooth LE trackers (NFC, AirTag): 2.4 GHz band – tracking up to 5 m.
- Sub-GHz transmitters (LoRa, Sigfox, RFID): 100 MHz – 1 GHz range – detection up to 12 m².
- Wireless microphones: FM/AM/VHF/UHF – signal detection up to 6 m².
- Cellular modems (USB, M2M): 2G/3G/4G – interface detection up to 10 m².
- Bluetooth audio transmitters: A2DP/aptX – range up to 8 m.
- Hidden transmitters in objects (watches, pens): RF 100 MHz – 6 GHz – detection up to 7 m².
- Laser infrared scanning: 0.1–5 m motion detection range.
- Magnetic detector: Sensitivity up to 10 cm from the field source.
- Frequency hopping transmitters: Dynamic channel change – detection up to 10 m².
Thanks to its ultra-wide range of 1 MHz – 12 GHz and two antennas (radio and magnetic), the detector will pick up both active and transiently active devices – even those sending single data packets.
Device components
- Magnetic antenna - Enables detection of magnetic fields and metal.
- Power indicator
- Power switch
- USB C port - Audio jack + USB-C power jack.
- Wave adjustment knob - Manual sensitivity adjustment and graph stretching.
- Automatic calibration button - Selects optimal sensitivity without user intervention.
- Sound mode switch - Turns sound alarm or vibration on/off.
- Waveform display window - Real-time graphical signal preview.
- Signal lamp - Indicates signal detection.
- RF antenna - Standard antenna for radio wave detection.
Technical specification
- Frequency range: 1 MHz – 12 GHz
- Dynamic range: > 73 dB
- Minimum detectable power: ≤ 0.03 mW (-73 dBm)
- 2.4 GHz camera detection: 0 – 25 m²
- 1.2 GHz camera detection: 0 – 36 m²
- Cellular signal detection (2G/3G/4G): 0 – 25 m²
- Magnetic probe sensitivity: up to 150 mm
- Indication mode: 15 levels LED / LCD graph / sound / vibration
- Charging: USB-C 5V port (full charging time ≈ 2 h)
- Operating current: 120 mA
- Battery life: 2 – 5 h
- Housing material: aluminum alloy (anodized)
- Dimensions: 117 × 71 × 17.4 mm (without antenna)
- Weight: 192 g
- Operating temperature range: –10 °C – +50 °C
The set includes
- 1x X11 Bug and Camera Detector
- 1x Wired headphones
- 1x Power cable
- 1x User manual
The manual in Polish language in electronic version is available in the attachment for download. You can find it above or below our product description.
