Skip to content
NullSpectreGet Protected
Defensive WiFi-CSI security

Your space. Your signal. Protected.

WiFi CSI technology that detects rogue surveillance devices — no cameras, no microphones, no blind spots.

Get ProtectedHow it works

Detects surveillance threats to your space. Never used to track anyone.

How it works

Three steps from box to protected. No technical knowledge required.

  1. Plug in

    Set your NullSpectre sensor in any room and power it on. No wiring, no drilling, no installer visit.

  2. Connects

    It joins your WiFi in minutes and begins reading Channel State Information — the ambient radio signal already filling your space.

  3. Protects

    NullSpectre continuously watches for the RF fingerprints of hidden cameras, mics, and trackers, and alerts you the moment one appears.

Choose your protection

One-time kit, then a simple renewal. Start small and grow — every tier upgrades to the next.

Home Starter

Start with 1 sensor. Perfect for a single room.

$79kit

then $59/yr billed annually(annual only)

  • 1 CSI sensor included
  • Plug-and-play — uses your router
  • Up to 1 sensor
Expandable — add sensors anytime, pay only for what you add
Get Protected

Upgrades to Home

Most popular

Home

3 sensors included. Expand up to 9 — add sensors anytime.

$199kit

then $149/yr billed annually

  • 3 CSI sensors included
  • NullSpectre gateway included
  • Up to 9 sensors
Expandable — add sensors anytime, pay only for what you add$39 hardware + $7/sensor/mo
Get Protected

Upgrades to Pro

Pro

10 sensors included. Expand up to 24 — ideal for offices.

$449kit

then $349/yr billed annually

  • 10 CSI sensors included
  • NullSpectre gateway included
  • Up to 24 sensors
Expandable — add sensors anytime, pay only for what you add$35 hardware + $5/sensor/mo
Get Protected

Upgrades to Enterprise

Enterprise

25 sensors minimum. Unlimited expansion — $29/sensor/mo.

$999kit

then $899/yr billed annually

Enterprise billed quarterly.

  • 25 CSI sensors included
  • NullSpectre gateway included
  • Unlimited sensors
Expandable — add sensors anytime, pay only for what you add$29 hardware + $3/sensor/mo
Get Protected

Every purchase is confirmed with a full order summary before payment — no surprises.

Built to protect every space

From a single nursery to a multi-site enterprise, NullSpectre defends against surveillance — never conducts it.

Home security

Know your home is truly yours. NullSpectre flags hidden cameras and mics in rentals, hotels, and Airbnbs before they can watch you.

Baby monitoring

Peace of mind for the nursery — detect unauthorized devices near your child without adding another camera or microphone to your home.

Office protection

Keep meetings confidential. Spot rogue trackers and covert recorders in conference rooms and private offices.

Enterprise TSCM

Technical surveillance counter-measures at scale. Continuous, automated sweeps across sites — no specialist team on site required.

Frequently asked questions

What is WiFi CSI?
Channel State Information (CSI) is fine-grained data about how WiFi radio signals travel through a space. Every object and device subtly changes those signals. NullSpectre reads CSI to sense the RF fingerprints of hidden cameras, microphones, and trackers — without any camera or microphone of its own.
Do I need technical knowledge?
No. Plug the sensor in, connect it to your WiFi from the app, and NullSpectre handles the rest. There is nothing to configure and no radio expertise required — it protects you automatically and alerts you in plain language.
What happens when my subscription ends?
Your hardware is yours to keep. When a renewal lapses, live threat monitoring and alerts pause, but your sensors and app remain installed. Renew anytime to instantly resume protection — no re-setup, no lost devices.