Unitree Dex5-1P Tactile Hand For H1-H1-2 (Left) (DEX5-HANDL)

Dex5-1P Tactile Hand For H1/H1-2 (Left) B2 Series Accessories (Dex5-Handl) (DEX5-HANDL)

Unitree positions its H1-series humanoids as compatible with optional dexterous hands such as Dex5-1, enabling higher-level manipulation tasks compared with standard grippers.

The Dex5 family is notable for combining high dexterity with tactile sensing, supporting robotic grasping, precision contact detection, and research in embodied intelligence. On Unitree’s official Dex5-1 product page, the system is presented as a dexterous hand with 20 degrees of freedom (listed as 16 active + 4 passive) and 94 tactile sensors per hand, intended to support both advanced control and secondary algorithm development.

As the left-hand variant for H1/H1-2, DEX5-HANDL is typically purchased either as a single module (left side only) or as part of a two-hand configuration (left + right) depending on application requirements such as bimanual manipulation, tool use, or humanlike object handling.

Design and Features

Five-finger anthropomorphic structure

Dex5-1P is designed to emulate human-like grasping with a five-finger layout and multi-joint finger articulation. Unitree describes the series as having 20 degrees of freedom, enabling diverse grasp types and more natural finger coordination than simple parallel grippers.

High dexterity with lateral swing

A distinctive Dex5 design feature is four-finger lateral swing, listed at ±22°, intended to improve grip reliability and adaptability on curved or irregularly shaped objects.
This lateral compliance helps stabilize grasps when objects are not perfectly aligned with the palm or when the robot must conform to surface curvature.

Dense tactile sensing for contact-aware control

Unitree specifies 94 tactile sensors per hand, emphasizing tactile feedback and the ability to support “secondary development of tactile algorithms” for dexterous manipulation research.
In robotics, tactile sensing improves grip stability by detecting slip, contact location, and distributed pressure—key for handling fragile objects or executing controlled insertion tasks.

Smooth backdrivability for force-aware motion

Dex5 is promoted as supporting smooth backdrivability, a property that helps reduce the “stiff hand” feel and supports more natural force interaction with the environment. Unitree highlights this as beneficial for smoother operation and reinforcement learning (RL) training workflows.

Modular finger replacement

Unitree states that all five fingers can be replaced independently, improving maintainability in research and industrial pilot environments where end-effectors are subject to wear and accidental impacts.

Technology and Specifications

Mechanical and motion specifications (Dex5 family)

Unitree’s official specifications list:

• Degrees of freedom: 20 (commonly described as 16 active + 4 passive)

• Four-finger lateral swing: ±22°

• Minimum grip diameter: 10 mm

• Fingertip repeat positioning accuracy: ±1 mm

• Fingertip strength: 10 N

Unitree also lists degrees-of-freedom distribution per finger (thumb and four fingers) on the Dex5-1 page, reflecting the multi-jointed architecture used for dexterous movement.

Power and connectivity

Common official parameters include:

• Working voltage: 24V to 60V

• Static current: 58V @ 0.2A

• Maximum current: 58V @ 4A

• Communication interface: USB 2.0

• Working temperature range: -20°C to 60°C

Data and control loop behavior

For robotics integration, Unitree lists:

• Communication rate: 1000 Hz

• Full packet size: sender and receiver byte counts, supporting high-rate state/control exchange

Reported feedback signals include joint position/velocity/torque/temperature, voltage/current, and IMU-related data within the data stream.

Load and holding capability (representative)

Unitree provides load condition examples using a 5 cm round hard object at room temperature:

• Max weight (palm facing down): 3.5 kg

• Max weight (palm facing left): 4.5 kg

These example values are scenario-dependent and should be interpreted as indicative rather than universal grasp capacity.

“Dex5-1P” dexterous-hand listing characteristics

Some reseller specifications for Dex5-1P (H1/H1-2) also describe:

• ≥10 degrees of freedom in one hand

• More than 20 sensor contacts per finger

• Maximum output torque per finger joint > 0.7 N·m

These values are often used in procurement contexts to quickly summarize capability and strength.

Applications and Use Cases

Humanoid manipulation research (H1 / H1-2)

A primary use case for DEX5-HANDL is enabling the Unitree H1 or H1-2 to perform dexterous manipulation, such as multi-contact grasping, handovers, and two-handed object stabilization. Unitree’s H1 documentation explicitly notes dexterous hands like Dex5-1 as optional, supporting expanded humanoid capability.

Tactile-driven grasping and slip-resistant handling

With dense tactile sensing, Dex5-1P is suited for tasks that benefit from pressure/contact feedback, including:

• stable holding of irregular objects

• controlled force application

• grip adjustment during motion

• slip detection and correction

Unitree emphasizes tactile sensors and tactile algorithm development as core features of the Dex5 platform.

Reinforcement learning and embodied AI training

Unitree frames backdrivability and fine control as enabling smoother operation and more practical RL training scenarios.
In research pipelines, high-rate state feedback (1 kHz) and rich sensing inputs can support iterative policy learning, sim-to-real experiments, and contact-rich skill acquisition.

Demonstrations and education

Dexterous hands are commonly used in public demos, robotics training, and applied education because they make humanoids capable of visibly “humanlike” tasks: grasping, turning, pinching, and manipulating common objects. The left-hand module (DEX5-HANDL) is often deployed alone for single-handed demos or paired with a right-hand module for bimanual activities.

Industrial pilot projects and human-tool interaction

While many Dex5 deployments are research-led, a dexterous hand can also be used in industrial pilots where a humanoid must interact with human-designed objects (handles, switches, tools). In these contexts, tactile feedback reduces risk and improves reliability when contact conditions vary.

Advantages / Benefits

High dexterity with repeatable precision

Dex5’s ±1 mm fingertip repeat positioning accuracy supports fine object placement and consistent grasp patterns.
This matters for insertion-like tasks, controlled pick-and-place, or stable two-handed coordination.

Dense tactile sensing for better grasp stability

With 94 tactile sensors per hand, the Dex5 platform supports contact-rich feedback loops and tactile algorithm development, improving manipulation outcomes compared with purely vision-based grasping.

Adaptability to object geometry

The ±22° lateral swing feature is intended to improve adaptation to curved surfaces and enhance grip reliability.
This makes the hand more forgiving when objects are imperfectly oriented or have rounded shapes.

Maintainability through modular finger design

Independent finger replacement can reduce service disruption and lower lifecycle cost in high-usage environments.

Fast integration through standard connectivity

The USB 2.0 interface and high-rate communication profile help integrate the hand into typical humanoid control stacks and research frameworks.

FAQ Section

What is Unitree Dex5-1P Tactile Hand for H1 / H1-2 (Left) (DEX5-HANDL)?

DEX5-HANDL is the left-hand version of Unitree’s Dex5-1P tactile dexterous hand, designed to integrate with Unitree H1 and H1-2 humanoid robots for advanced five-finger manipulation.

How does the Dex5-1P tactile hand work?

Dex5-1P uses a multi-jointed finger design (20 DOF) and dense tactile sensing (94 sensors per hand) to measure contact feedback and enable precise finger motion, supporting stable grasps and fine manipulation.

Why is the Dex5-1P tactile hand important for humanoid robots?

Dexterous hands expand humanoid capability from mobility-focused behavior to human-object interaction, including tool handling, stable grasping, and tactile-driven contact control—key areas in industrial robotics and embodied AI research.

What are the benefits of Unitree Dex5-1P tactile hand?

Key benefits include 94 tactile sensors, 20 degrees of freedom, ±1 mm repeat positioning accuracy, ±22° lateral swing, and a modular design where fingers can be replaced independently.

Summary

The Unitree Dex5-1P Tactile Hand for H1 / H1-2 (Left) (DEX5-HANDL) is a high-end, five-finger dexterous hand module designed to bring precision manipulation and tactile feedback to Unitree’s H1-series humanoid robots. With 20 degrees of freedom, 94 tactile sensors, and millimeter-scale repeatability, the left-hand Dex5-1P supports research, education, and pilot deployments that require contact-rich, humanlike grasping and control—making it a key component for advanced humanoid interaction workflows.