The largest robot in the CALIBER family, the CALIBER MK4 offers unprecedented towing and dragging capabilities coupled with speed, agility and dexterity—all at an affordable cost.

The MK4 is the most powerful of all CALIBER robots, with a lift capacity of 200 lbs (90 kg). Its Command & Control Unit provides automatic pre-set positioning to facilitate rapid deployment; and a 3D avatar that offers real-time positional feedback on the actual position of the robot.

Based on recommendations by bomb technicians, the robot’s modular design allows for reduced maintenance costs through easy platform upgrades, field repair, and parts replacement.


The variable speed drive system accelerates the robot up to 2 mph (3.2 km/h).

The low end torque allows the CALIBER MK4 to climb stairs and drag a fully loaded battle wagon for VBIED countermeasures.

The rubber tracks can maneuver over various types of rugged terrain including snow, mud, and sand.


One 48V DC quick change battery pack extends your mission time by up to 5 hours (mission dependent).

It also reduces the need to change batteries during the mission. The CCU screen indicates real-time battery status


The weather resistant CCU’s low reflection LCD color TOUCH screen shows clear images in both bright and low light conditions from any of the 7 color cameras on the robot.

The CCU provides precise operation of the CALIBER MK4 using variable speed joystick and dedicated Pan-Tilt-Zoom (PTZ) Camera joystick.

Also included is a 3-D avatar that provides real-time positional feedback on the actual position of the robot. Automatic preset positioning facilitates robot deployment