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T4™ Robotic System

Compact, Rugged Robot for the Most Demanding Missions

Our ruggedized T4 robot has the power and dexterity to support the most demanding commercial and military missions, including explosive ordnance disposal (EOD), chemical, biological, radiological, nuclear and explosives (CBRNE) detection and hazardous materials (HAZMAT) clearance. With its flexible design, human-like precision and best-in-class reach and strength, T4 allows operators to quickly access, inspect and defeat hazardous threats in tight urban spaces, as well as austere environments.

Cutting-Edge User Interface Providing Unmatched Control

T4 is the first medium-sized robot with haptic feedback, an advanced technology that allows operators to feel exactly what the robotic arm touches or holds. Through its unique user interface, the robot arm mirrors the movement of the user’s hand, minimizing required training and maximizing mission effectiveness. T4’s intuitive haptic control enables difficult manipulation tasks, such as unzipping bags and opening glove boxes, to be performed quickly and easily – keeping operators out of harm’s way.

Best-in-Class Robotic Technology for Uncompromised Performance Anywhere

T4 provides unmatched strength, reach, intuitive control and robustness in a compact, rugged package to deliver uncompromised performance anywhere – even the harshest environments.

T4™ Robotic System Specifications

Platform Specifications
Weight 154 lbs (70 kg) (chassis with batteries installed)
72 lbs (33 kg) (quick release manipulator arm)
Dimensions (L x W x H) 36.2 x 17.5 x 46.8 in (91.9 x 44.5 x 118.9 cm) (arm stowed, PTZ camera raised)
36.2 x 17.5 x 13.5 in (91.9 x 44.5 x 34.3 cm) (chassis only)
Power 7+ hour runtime (depending on task)
6 BB-2590 batteries
Speed 5+ mph (8+ kph)
Mobility Skid steer track system
Climbs stairs and slopes over 45°
Traverses lateral slopes over 30°
Cameras 2 driving cameras (front, rear)
PTZ mast camera with 120x zoom
Zoomable gripper camera
Radio LOS range: 3300+ ft (1000+ m)
NLOS range: 660+ ft (200+ m)

-4°F to +140°F (-20°C to +60°C) operational
EMI-shielded for use with active jammers
Maximum fording depth: 12 in (30.5 cm)
IP66 sealed

Manipulator Specifications
Reach 80 in (2 m) horizontal; 98 in (2.5 m) vertical
Lift Capacity 121 lbs (55 kg) near chassis; 44 lbs (20 kg) full extension
Self-righting capability and stabilizers for omni-directional stability
Gripper Force-sensing gripper with non-conductive wire cutter
Disruptors Supports up to 3 total disruptors, including up to 2 large disruptors (PAN, PIGSTICK, HOTROD, RE70, etc.)
Haptic Controller Specifications
Weight 35 lbs (16 kg) (including battery)
Dimensions (L x W x H) 18.7 x 16.2 x 9.2 in (47.5 x 41.0 x 23.4 cm)
Power 4+ hour runtime
1 BB-2590 or external 24-30 VDC power
Controllability Manipulator presets (standard and user-defined)
Manipulator motion rewind function
Audio/video Daylight-visible display


t4 robot raises its arm

Press release | 05. 10. 2024

UK Ministry of Defence Selects L3Harris T4 Robots to Assist with Explosive Ordnance Disposal Missions

The U.K. Ministry of Defence (MOD) has selected L3Harris Technologies for an $18 million contract to deliver up to 50 medium-sized T4™ explosive ordnance disposal (EOD) robots to defeat explosive threats located within confined urban spaces.

t4 robot raises its arm

Press release | 05. 10. 2024

UK Ministry of Defence Selects L3Harris T4 Robots to Assist with Explosive Ordnance Disposal Missions

T7 Robots Ready for Their Next EOD, HAZMAT or CBRNE Mission

Editorial | 04. 08. 2022

How to Unlock the Most Value from Your Robotic Systems Investment

T7 and T4 EOD Robots

Editorial | 02. 02. 2022

How Harnessing the Right Size of Robot Can Make a Big Difference to Your Mission

L3Harris Intuitive Haptic Control

Editorial | 09. 15. 2021

What Is “Intuitive Haptic Control” and Why Do You Need It?

L3Harris is awarded a 10-year, $85-million, IDIQ contract.

Press release | 09. 14. 2021

L3Harris Robots to Help Protect US Air Force Bases Around the World

Contact the Robotics Team


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