650nm Red Dot Laser Diode Module Adjustable Focus 16×68mm

Elubor 650nm Red Dot Laser Diode Module – Precision Adjustable Focus with Lock Ring

Bring pinpoint accuracy to your positioning, alignment, stage lighting, or DIY electronics projects with the Elubor 650nm Red Dot Laser Diode Module (Model 650M-1668). Built in a compact 16×68mm aviation-grade aluminum alloy housing, this versatile module delivers a sharp, visible red dot beam at wavelengths of 648nm–650nm, with selectable output power options of 10mW / 50mW / 100mW / 150mW / 200mW / 250mW — making it an ideal choice for hobbyists, engineers, stage technicians, and makers alike.

Made in Mainland China.

Key Features

• Adjustable Focus: Rotate the front lens housing to shift the dot between tight focus and wider projection — perfect for varying working distances.
• Lock Ring Included: Secure your chosen focus position with the integrated lock ring, eliminating unwanted drift during operation.
• Multiple Power Options: Choose from 10mW, 50mW, 100mW, 150mW, 200mW, or 250mW output to match your application requirements.
• Premium Optical Construction: Features an imported laser diode paired with a K9 glass lens and wavy glass optics for a clean, stable dot output.
• Constant Current Driver Board: Built-in constant current circuitry protects the diode and ensures consistent, stable output across the operating range.
• Compact Aviation Aluminum Housing: Lightweight yet durable, the aluminum alloy shell dissipates heat efficiently and withstands demanding environments.
• Wide Temperature Range: Operates reliably across ±50°C, suitable for both indoor and outdoor setups.
• 1.2m DC Power Cable Included: Ready to connect; runs on a clean DC 5V supply (working current: 10–280mA).
• Spot Mode Options: Available in Dot, Line, or Cross beam patterns (specify at order).

Technical Specifications

What's in the Box

• 1× 650nm Red Dot Laser Diode Module (with lock ring & 1.2m DC cable)

⚠ Laser Safety Notice: This module emits a visible red laser beam. Always follow appropriate laser safety precautions. Never point the beam at eyes or faces. Higher-power variants (≥50mW) can cause immediate eye injury. For guidance on laser product safety standards, refer to the U.S. Consumer Product Safety Commission (CPSC) Laser Safety Resources.

Frequently Asked Questions

Q: What power level should I choose for my red dot laser diode module?

A: For general alignment, positioning, or stage lighting accent use, the 10mW or 50mW options are typically sufficient and safer to work with. Higher power options (100mW–250mW) are suited for longer projection distances or industrial alignment applications where greater beam intensity is needed. Always observe appropriate safety precautions with higher-power settings.

Q: Can I use this 650nm laser module with a standard USB 5V power supply?

A: Yes. The module operates on DC 5V, which is compatible with most standard USB-output power adapters or regulated 5V bench power supplies. Ensure your power source can supply sufficient current for the power variant you select (up to 280mA for the highest output options).

Q: Is the focus on this laser module adjustable, and how does the lock ring work?

A: Yes — the front lens section can be rotated to move the focal point closer or further, letting you achieve a sharp tight dot at your desired working distance. Once you have the focus set, tighten the included lock ring to hold the lens in place and prevent it from shifting during use.