Unitree B2 Fire Rescue Quadruped Robot Dog (B2-XF2-D)

Most machines sold for firefighting are really hoses on a chassis: they go where a driver can take them and stop where the ground gets difficult. The Unitree B2 Fire Rescue Quadruped Robot Dog (B2-XF2-D) starts from the opposite idea. It is a legged robot that walks, climbs and jumps toward the hazard, and it carries a water and foam cannon on its back to deal with it from a distance.

This product is available through this page, by quotation.

Background

Unitree and the B2 lineage

Unitree Robotics is known for quadruped robots, and the B2 sits at the heavy-duty end of that family. The B2 is built as an industrial platform for inspection, rescue and heavy carrying work, rather than as a light research or teaching robot. Its joint performance has increased by 170%, which is the foundation for the strength and stability that fire rescue demands.

The B2 range is sold in several configurations. The fact sheet for this page names the versions XF1, XF2, F2 and F2D. The designations matter because they decide whether the robot is delivered with navigation hardware. Models designated XF2 or F2D include the Laser SLAM kit for autonomous navigation, while models with XF1 or F2, without the D, are delivered without SLAM navigation.

Positioning of the fire rescue version

The fire rescue version takes the B2 base robot and adds a water cannon with a body-compensated angle. The cannon has a pitching range of 5 - 85°, a water flow rate of 40L/s, and can be used for both water and foam. Its firing range is 60m. Quick battery replacement while maintaining water-tightness is of great significance for improving rescue efficiency and safety, because a robot that must be dried out or opened up to swap power spends more time out of the fight.

The robot also climbs fire stairs with excellent stability and balance. For ascending and descending steps, facing front, the maximum height is 40cm. Together these traits place the B2-XF2-D as a mobile firefighting tool for places where tracked or wheeled machines struggle.

Technical Specifications

Specifications as published by the manufacturer; confirmed against the datasheet at quotation.

The manufacturer has not published the weight of the water cannon, the Wi-Fi specification or the software and SDK support for this version; they are confirmed at quotation.

What makes the B2-XF2-D different from a wheeled or tracked fire robot?

The difference is how the robot meets the terrain. A wheeled or tracked machine needs a reasonably continuous surface. A legged robot places its feet where it needs them, so it can take on steps, slopes and broken ground. This robot climbs a 45° slope, handles steps up to 40cm high, and can jump as far as 1.6 m.

It also runs at 6 m/s, so it can reach a scene quickly, and it is rated IP67 and operates from -20°C to 55°C. Those figures describe a machine meant for wet, hot and dirty conditions rather than a clean indoor environment.

The water cannon adds to this. Its angle is body-compensated, so the aim is held while the body moves, and the 60m firing range keeps the robot well back from the point of attack. With foam as well as water available, one platform covers more than one kind of fire.

What does the SLAM kit add?

Models designated XF2 or F2D include the Laser SLAM kit for autonomous navigation. This robot carries one 3D-LiDAR, two depth cameras and two optical cameras, and the navigation kit gives it a way to map and move through a site on its own instead of relying only on a remote operator. Models with XF1 or F2, without the D, are delivered without SLAM navigation, so buyers who need autonomous movement should check the designation first.

If you are comparing several B2 fire rescue versions, you can look at B2-XF2-A and B2-XF2-B, or browse the wider Unitree B2 category.

Who is the B2-XF2-D for?

Fire and rescue services are the first group: brigades that want to send a machine ahead of their crews into stairwells, plant rooms and industrial yards. Industrial sites with their own emergency teams, such as fuel storage, warehouses and processing plants, have the same need on a smaller scale.

Training institutes and research groups also have good reason to look at it. The four Ethernet ports, four USB 3.0 ports and several power outputs of 12V, 24V and 5V make it a carrier for added equipment. A 3D laser scanner is available as an optional payload, with 16 laser beams, 320,000 points/second, 120m range and 1cm accuracy, though it is not included in the delivery.

Buyers who want a wheeled B2 for flatter industrial routes may prefer the Unitree B2-W Industry Grade Quadruped Robot Dog with Wheels, which is a different product from this fire rescue version.

What is the B2-XF2-D used for?

1. Fire suppression: the water and foam cannon projects 40L/s out to 60m from a safe standoff position.
2. Stair and structure entry: it climbs fire stairs with steps up to 40cm to reach upper floors before crews do.
3. Hazard reconnaissance: LiDAR and cameras give operators a view of spaces too hot or smoky to enter.
4. Autonomous site navigation: the Laser SLAM kit supports self-guided movement on this version.
5. Equipment carrying: it can carry a payload of 40 kg or more while walking.
6. Mapping and survey: with the optional 3D laser scanner, it can capture detailed point-cloud data of a scene.

Pricing and Availability

We do not publish a price for this robot, because the final package depends on the configuration and the payloads you choose. Quotation is the way to proceed: send us your requirements and we will respond with a quote. Delivery, customs and support are arranged together with the quotation. The robot is available on this page.

The scope of delivery covers the robot dog, a B2 battery (45 Ah / 2250 Wh), a charger, a remote control, an air transport box and a tool kit, depending on the model. The payloads shown in product images are not included.

Frequently Asked Questions

Does the B2-XF2-D include SLAM navigation?

Models designated XF2 or F2D include the Laser SLAM kit for autonomous navigation. Models designated XF1 or F2 are delivered without it.

How far can the water cannon fire?

The firing range is 60m, with a water flow rate of 40L/s. It can be used for both water and foam.

Can it climb stairs?

Yes. Facing front, it ascends and descends steps up to 40cm high, and it keeps stable and balanced on fire stairs.

How is the robot protected against water and cold?

It has a protection rating of IP67 and an operating temperature of -20°C to 55°C.

What battery does the robot use?

The battery is 45 Ah (2250 Wh) at 58 V, and it can be replaced quickly while keeping water-tightness.

Is the 3D laser scanner included?

No. The payloads shown are not included in the scope of delivery. The optional scanner has 16 laser beams, 320,000 points/second, 120m range and 1cm accuracy.

Where can I buy the B2-XF2-D and what does it cost?

You can request a quotation on this page. We do not list a price here; the cost depends on configuration and payloads, and we answer with a quote that includes delivery and support arrangements.

Summary

The B2-XF2-D is a hose that walks: a 75 kg quadruped that climbs 45° slopes, takes 40cm steps and fires water or foam out to 60m. Its IP67 rating, wide temperature range and quick battery replacement fit the conditions a fire scene creates, and the SLAM kit adds autonomous navigation. If you want to put it in front of your crews, this page is the starting point.