Knightscope · Security robot

Knightscope K3

Legacy indoor security robot

Purchase price Legacy; existing deployments only

Height / weight: About 1.2 m / 154 kg
Speed: Up to 4.8 km/h
Patrol time: 2–3 h
Cameras: 360° HD + thermal
Environment: Indoor
Best for: Existing K3 sites

Up close

The Knightscope K3 is an earlier indoor security robot that patrols mapped routes in buildings, streaming 360° video and thermal imaging to Knightscope's browser-based monitoring software and docking itself to recharge. It was supplied as a managed subscription and is no longer in Knightscope's hardware line-up, which now centres on the K5 and K7.

Key features

Indoor patrol

Follows mapped routes and returns to its dock.

Security sensing

Video, thermal, audio and environmental sensing.

Browser monitoring

Live data, playback and reports.

Visible deterrent

Adds to cameras and human patrols.

Is it right for you?

Good fit if

Sites already running K3 robots
Indoor patrol research

Not ideal if

New buyers (choose the K5)
Outdoor patrol or stairs

Where it works

Indoor security patrol
Warehouses
Offices

Specifications

Robot type: Autonomous security robot
Main purpose: Indoor security patrol
Operating environment: Indoor public and industrial spaces
Availability: Legacy; not in Knightscope's 2025 line-up
Mobility: Wheeled; self-docking
Max speed: Up to 4.8 km/h (3 mph)
Battery / power: 2–3 h patrol; auto-docking
Navigation / control: Autonomous patrol; browser-based monitoring
Sensors: 360° HD cameras, thermal imaging, LiDAR, sonar, IMU, microphones
Dimensions: About 1,219 mm tall × 610 mm wide
Weight: About 154 kg (340 lb)

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Pricing

🇺🇸United States

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Questions

Can I still get a K3?

Only through existing deployments or special legacy arrangements. Knightscope now offers the K5 and K7.

Does a used K3 work on its own?

Not as intended. It relied on Knightscope's monitoring software, dock and service.

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