405nm 500mW Violet Laser Engraving Module – 12V Adjustable Focus PWM/TTL

Product Overview

This 405nm 500mW violet laser engraving module is designed for integration with laser engraving machines, 3D engraving machines, DIY CNC systems, optical equipment, and OEM laser applications. It features an adjustable-focus dot beam, 12V DC operation, ACC constant-current drive, forced-air cooling, and external PWM/TTL laser power control.

The module uses a black anodized aluminum housing for effective heat dissipation and incorporates active fan cooling for stable operation. Its adjustable focusing system allows the laser spot to be optimized for different working distances and engraving applications.

With its compact construction and external control interface, this 405nm laser module is suitable for replacing or integrating a laser head into compatible engraving and DIY laser systems.

Key Features

• 405nm violet laser wavelength
• 500mW optical output power
• Designed for laser engraving and marking applications
• Suitable for compatible 3D engraving machines and DIY engraving systems
• Adjustable-focus dot beam
• Supports PWM or TTL control
• 5V PWM/TTL control signal
• Recommended PWM frequency: 18kHz or below
• 12V DC operating voltage
• ACC constant-current driver
• Forced-air cooling with integrated fan
• Black anodized aluminum housing
• Copper internal module construction
• Coated optical glass collimating lens
• Compact design for OEM and machine integration

Technical Specifications

Wavelength: 405nm
Laser Color: Violet
Output Power: 500mW
Operating Mode: CW
Beam Type: Dot
Focus: Adjustable
Operating Voltage: 12V DC
Drive Mode: ACC constant-current drive
Cooling Method: Forced-air cooling
Power Control: PWM / TTL
Control Signal: 5V PWM or TTL
PWM Frequency: 18kHz or below recommended
Housing Material: Aluminum
Surface Finish: Black anodized
Internal Module Material: Copper
Collimating Lens: Coated optical glass

Dimensions & Mounting

• Overall length: Approx. 83mm
• Main housing length: Approx. 55mm
• Housing width: Approx. 33mm
• Horizontal mounting-hole spacing: Approx. 40mm
• Vertical mounting-hole spacing: Approx. 16mm
• Mounting-hole diameter: Approx. 3mm

Please refer to the product dimension image before installation to confirm compatibility with your engraving machine or mounting system.

PWM / TTL Control

The laser module supports external power control using a 5V PWM or TTL signal. According to the supplier specifications, when PWM control is used, the signal frequency should be 18kHz or below.

Control connections:

• PWM – PWM/TTL control signal
• GND – Ground
• VCC / 12V+ – 12V DC positive power supply

Always verify the wiring, voltage, and polarity before powering the laser module.

Engraving Applications

This 405nm 500mW laser module is designed for integration into compatible laser and engraving systems, including:

• Laser engraving machines
• 3D engraving machines
• DIY CNC laser engravers
• Surface marking systems
• DIY laser projects
• OEM laser equipment
• Optical experiments and laboratory projects
• Research and development applications

Compatible Engraving Materials

According to the supplier, this module can be used for engraving or marking suitable materials such as:

• Wood
• Bamboo
• Paper
• Leather
• Selected plastics
• Rubber
• Horn and similar materials

Actual engraving performance depends on the material type and color, focus adjustment, working distance, movement speed, exposure time, and machine settings. Testing on a small area is recommended before processing the final workpiece.

Material Limitations

According to the supplier, this 500mW module is not intended for processing or cutting materials such as:

• Metal
• Glass
• Stone
• Ceramic
• Silver and jewelry materials
• Highly reflective materials
• Semi-transparent materials

This is primarily an engraving and marking laser module. It should not be purchased on the assumption that it can cut thick materials.

Power & Connection

The module operates from a 12V DC power source. According to the supplier, a 12V 5A power supply is recommended when installing the module on an engraving machine.

The supplied connection cables allow the laser module to be integrated with compatible power and control systems. Please verify your machine's voltage, connector configuration, and PWM/TTL interface before installation.

Package Includes

• 1 × 405nm 500mW Violet Laser Engraving Module
• 1 × 3-Pin Connection Cable
• 1 × 3-Pin to 4-Pin Connection Cable
• 1 × Protective Laser Safety Glasses

Important Safety Information

WARNING: This is a professional laser component and is not a toy.

• Never look directly into the laser aperture or beam.
• Avoid direct or reflected laser exposure to the eyes.
• Wear appropriate laser safety eyewear suitable for the 405nm wavelength during installation, testing, adjustment, and operation.
• Keep away from children and unauthorized users.
• Do not operate near flammable liquids, gases, or other combustible environments.
• Do not open or disassemble the laser module.
• Ensure adequate cooling and ventilation during operation.
• Verify the voltage, wiring, and polarity before connecting power.

Professional installation and operation are recommended.