◆  Optional with the function or accessor as follows:

→  Single On-off version with linear potentiometer

→  Single On-off version with Reversing and linear potentiometer

→  Single Brake

→  Trigger covered with rubber (overmolding)

◆  Input side/Output side:

→  Wire terminal

→  Wire terminal with Plug

DT01 Series Power Tool Switch: Precision DC Signal Trigger Switch for Brushless Tools

Product Overview

The DT01 Series represents a new generation of DC signal trigger switches, specially developed to meet the demands of modern brushless DC (BLDC) power tools. As an advanced, compact, and wireless PCB-mounted solution, the DT01 excels in environments requiring signal-level control, high reliability, and robust mechanical performance. With an integrated dustproof design, it’s built to withstand the rigors of harsh, dust-laden work conditions—making it ideal for cordless drills, impact wrenches, and screwdrivers.

The DT01 series is not a traditional power switch but a low-voltage signal control component that acts as a precise interface between the user and the motor driver system. By directly mounting onto the PCB without the need for additional wires, it significantly simplifies the internal structure of power tools, reduces assembly time, and minimizes potential failure points related to loose or damaged cabling.

Key Technical Specifications of DT01 Series

Key Features of DT01 Series

1. Signal-Level Control for BLDC Systems

Unlike traditional mechanical switches that handle main power circuits, the DT01 series is designed to operate at the signal level. It serves as a trigger input for a microcontroller (MCU) or motor driver circuit, sending precise on/off or PWM input based on user action.

This enables advanced motor control algorithms, including soft start, speed regulation, torque feedback, and braking logic—all of which are hallmarks of brushless tool design.

2. Integrated Dustproof Housing

The DT01 incorporates a sealed mechanical design to prevent dust ingress, a common failure cause in power tools exposed to wood chips, cement, or metal shavings. The internal mechanism is enclosed in a sealed plastic shell, which enhances operational reliability, especially in construction, woodworking, or automotive service environments.

3. PCB-Mount Wire-Free Design

One of the DT01’s most innovative features is its PCB mount design with no need for additional wiring. This simplifies the internal layout of the power tool and:

• Reduces assembly time

• Eliminates wiring errors

• Improves vibration resistance

• Enables compact and lightweight design

It is especially advantageous in mass production environments where speed and consistency are critical.

4. Tailored for Ergonomics

The DT01 series is ergonomically optimized to provide a smooth and predictable trigger feel, ensuring user comfort during extended operation. The actuation force and stroke length are finely calibrated to balance responsiveness and resistance, reducing hand fatigue without sacrificing control precision.

5. Modular Compatibility with Driver Boards

This switch is often paired with proprietary or OEM brushless motor control PCBs, enabling seamless integration with:

• FOC controllers

• MOSFET arrays

• Integrated driver ICs

As it provides the user signal input, it’s often a critical interface in feedback loops and closed-loop systems.

Application Scenarios

1. Brushless Cordless Drills

Cordless drills have evolved into high-performance tools using BLDC motors for improved torque, speed, and battery efficiency. The DT01 serves as the primary user input switch, delivering low-noise, precise control signals for:

• Variable speed input

• Direction control

• Trigger interlock logic

Its dust-sealed housing is particularly effective in preventing damage from plaster dust, sawdust, or concrete particles during job site use.

2. Brushless Cordless Screwdrivers

In precision screwdrivers used in electronics or assembly lines, reliable and accurate trigger response is paramount. The DT01 offers:

• Light-touch actuation

• Minimal mechanical hysteresis

• Low-profile design for compact tools

This enables repeatable torque control in production environments where consistency is key.

3. Brushless Cordless Impact Wrenches

For heavy-duty impact wrenches used in automotive repair, the DT01 offers:

• Enhanced vibration resistance

• Dust-resistant triggering

• Quick signal relay for torque burst activation

The robust housing and PCB-mounted format help the switch survive in shock-prone and oil-contaminated environments.

4. Compatible with Smart Tools

The DT01 is ideal for next-generation “smart tools”, where software-controlled responses—like overload protection, feedback torque control, or automatic shutoff—are managed via internal microcontrollers. The DT01 acts as the user interface signal that kicks off these programmed responses.

Benefits for OEMs and Manufacturers

1. Simplified Internal Architecture

By removing the need for hand-wired connections, DT01 reduces:

• Wire routing complexity

• Labor cost

• QC errors

• Electrical noise from long signal paths

It also shortens the tool design cycle for OEMs aiming to bring new BLDC products to market quickly.

2. Enhanced Assembly Speed

With direct PCB soldering, the DT01 supports automated or semi-automated assembly, ideal for:

• High-volume tool production

• Multi-shift manufacturing lines

• Lean production environments

3. Lower Maintenance & Longer Tool Lifespan

The sealed mechanism resists wear, oxidation, and dust abrasion, leading to longer switch life and reduced tool failure rates in the field.

Common FAQs

Q1: Is the DT01 a power-carrying switch?

No. The DT01 is a DC signal-level switch and not intended for switching high voltage or high current directly. It should be used as a trigger for logic-level circuits or motor controllers.

Q2: How is it mounted in the tool?

The DT01 is designed for direct PCB soldering and does not require wiring or external connectors. Its footprint is compatible with standard control boards for cordless tools.

Q3: Can it be used outdoors?

While not waterproof, the DT01’s dustproof design offers moderate protection in outdoor environments when installed within an enclosed tool housing. For high-moisture environments, consider additional sealing methods or tool casing protection.

Q4: What’s the typical electrical rating?

The DT01 operates at signal levels, typically under 100mA and below 12VDC. It is not rated for mains voltage or high-load circuits.

Q5: Is it compatible with analog or PWM triggers?

Yes. The DT01 can work as a digital on/off trigger or with variable-resistance modules that support PWM control depending on the tool design.

Q6: Is the DT01 customizable?

Yes. For high-volume clients or OEM tool builders, the DT01 can be customized in:

• Trigger force or stroke

• Contact type

• Mounting pin layout

• Branding or labeling

Conclusion

The DT01 Series Power Tool Switch is a specialized solution for modern brushless DC cordless tools, bringing signal-level triggering, dust protection, and wire-free PCB integration to the forefront of power tool design. Compact, efficient, and robust, it empowers manufacturers to build reliable, high-performance, and ergonomic tools for professional and consumer use.

With its intelligent mechanical layout and digital compatibility, the DT01 is an essential component in the shift toward smarter, more efficient cordless power tools in construction, automotive, and DIY markets worldwide.