635nm Focusable Red Laser Dot Module 300–700mW TTL + Fan 12V
635nm Focusable Red Laser Dot Module 300–700mW TTL + Fan 12V
635nm Focusable Red Laser Dot Module with TTL Modulation & Cooling Fan
Take your laser projects to the next level with this high-performance 635nm orange-red focusable laser dot module. Offering selectable output power of 300mW, 500mW, or 700mW, this module delivers a precise, adjustable dot beam ideal for industrial alignment, engraving, positioning, scientific research, and DIY electronics applications. Built with a durable aluminum housing and constant-current control circuitry, it's engineered for extended, stable operation.
Key Features
- Wavelength: 635nm / 638nm orange-red laser output
- Output Power Options: 300mW, 500mW, or 700mW selectable
- Focusable Beam: Adjustable focus for precise dot projection (rectangular to oval, non-circular dot)
- TTL Modulation: Adjustable modulation frequency for pulsed or continuous operation — compatible with CNC, Arduino, and other controllers
- Integrated Cooling Fan: Keeps the module at a stable operating temperature for long-duration use
- Constant Current Circuit: Ensures steady, reliable laser output and protects the diode
- Reverse Polarity Protection: Automatically identifies positive and negative polarity for safe, worry-free wiring
- 12V DC Operation: Includes a 12V power adapter — plug in and get started right away
- Aluminum Housing: Rugged, heat-dissipating black anodized aluminum construction
- Operating Temperature: -10°C to +40°C
Technical Specifications
| Laser Head Size | 50mm × 33mm × 33mm |
| Circuit Board Size | 45mm × 34mm |
| Wavelength | 635nm / 638nm |
| Output Power | 300mW / 500mW / 700mW |
| Modulation | Adjustable TTL |
| Operating Voltage | DC 12V |
| Case Material | Aluminum (Black) |
| Operating Temperature | -10°C to +40°C |
| Power Source | AC (12V Adapter Included) |
What's in the Box
- 1× Focusable 635nm/638nm Laser Dot Module with TTL & Cooling Fan
- 1× 12V Power Adapter
Made in Mainland China.
⚠️ Laser Safety Notice: This module emits high-powered visible laser radiation. Always wear appropriate laser safety eyewear when operating. Never point at people, animals, or reflective surfaces. Keep out of reach of children. For more information on laser safety standards, visit the U.S. Consumer Product Safety Commission (CPSC) Laser Safety page.
Learn more: Laser pointer
Frequently Asked Questions
Q: What is TTL modulation on a laser dot module, and why does it matter?
A: TTL (Transistor-Transistor Logic) modulation allows the laser to be switched on and off at high speed via a digital signal, making it fully compatible with CNC controllers, Arduino boards, and other microcontrollers. This enables precise pulsing, engraving patterns, and integration into automated systems without mechanical shutters.
Q: Can this 635nm laser module run continuously for extended periods?
A: Yes. The integrated cooling fan actively manages heat dissipation, and the constant-current circuit maintains stable output, allowing this module to operate for extended durations. The operating temperature range is -10°C to +40°C for reliable long-term use.
Q: What is the difference between 300mW, 500mW, and 700mW output power options?
A: Higher output power produces a brighter, more visible beam over greater distances and is better suited for applications like laser engraving, industrial alignment, or use in brighter ambient lighting. Lower power options (300mW) are ideal for laboratory or precision alignment tasks where beam intensity needs to be minimized. Select the power level that best matches your specific project requirements.
Q: Does the laser produce a perfectly round dot?
A: The beam shape is rectangular to oval rather than a perfectly circular dot. The module is focusable, allowing you to adjust the beam to suit your application's alignment or projection needs.