SPECIFICATIONS

9mm Adjustable Focus Red Laser Head | 3 Spot Patterns | Plug & Play | for Level, Pointer, Communication Projects

✨ Key Features & Benefits

🔧 Adjustable Copper Housing: Precision thread design for fine focus adjustment → delivers clear & stable spot for various distances

🔴 650nm Red Laser: 5mW output, high brightness & low power consumption → visible in daylight, clear at night, energy-saving

⚙️ Three Spot Patterns: Dot, line, and cross spots available → multi-use for measuring, marking, and positioning

🔌 Ready-to-Use Design: Pre-focused and glued, pins unsoldered → connect to 3V power directly, no extra calibration needed

📏 Precision Optics: Integrated laser chip + collimating lens → uniform spot, small divergence, ideal for long-distance applications

📝 Product Description

This 9mm red laser diode features an adjustable copper housing, offering dot, line, and cross spot patterns. Operating at 3V, 5mW, 650nm, it comes pre-focused and fixed—ready to use upon connection. Widely used in laser levels, electronic pointers, long-distance communication, security alarms, and various DIY/industrial applications.

⚠️ Important Notes (Must Read)
Laser Safety Warnings (Strictly Prohibited):

🚫 NEVER point at eyes: Even when turned off, accidental activation can cause permanent eye damage.

🚫 Avoid reflective surfaces: Glass, mirrors, and metal can reflect laser beams, causing indirect eye injury.

🚫 Not a toy, keep away from children: Unsuitable for minors or persons untrained in laser safety.

🛡️ Wear safety goggles: Use matched-wavelength laser safety glasses, especially with high-power or invisible lasers.

🚫 Do not aim at vehicles: Never point at cars, aircraft, or moving transport to avoid distracting operators.

🔋 Battery safety: Use appropriate batteries, prevent reverse polarity, short circuits, overcharge, or overheating to avoid fire/explosion.

Usage & Installation Tips:

💡 Current-limiting resistor: For prolonged use (>30 mins), increase resistor value to prevent overheating.

⚡ Voltage & polarity: Use 3V DC strictly, keep current <20mA. Reverse connection is prohibited (>1V reverse voltage may damage the device).

🔧 Heat dissipation: Add a heat sink or ensure ventilation during continuous operation to extend service life (>1000 hours).

📍 Mounting: Secure the laser head with glue or clamps to prevent focal shift due to vibration.

📊 Specifications

Model: 9mm Red Laser Head (Adjustable Copper Housing)

Color: Red

Wavelength: 650nm

Output Power: 5mW

Spot Type: Dot / Line / Cross (select when ordering)

Operating Voltage: 3V DC (rated)

Operating Current: <20mA (recommended)

Max Forward Voltage: ≤4.5V (transient)

Max Reverse Voltage: ≤1V (do not exceed)

Spot Size at 15m: φ10mm~φ15mm

Effective Range: Up to 200-1000m at night (weather dependent)

Operating Temperature: -36℃ ~ +65℃

Storage Temperature: -36℃ ~ +65℃

Lifetime: >1000 hours (under normal use)

Housing Material: Adjustable copper sleeve

Dimensions: Ø9mm × ~30mm (excluding pins)

Pin Status: Unsoldered (straight pins)

📦 Package Includes

1 × 9mm Red Laser Head (Dot/Line/Cross according to selected SKU)