Feature:1. UPGRADE ENGRAVING MODULE: Designed N30820 engraving module with 5.5W output power, can cut 3mm thick plywood cleanly at one time2. TECHNICAL PARAMETERS: If compatible with other CNC equipment, the NEJE engraving module must correspond to the application interface voltage of 3.3~12V, duty cycle 1%~100%, and frequency 0-20kHz3. INTELLIGENT ADJUSTMENT: Built in fast intelligent drive, realize timely temperature detection, intelligent adjustment of the fan to reduce noise, guarantee safe and quiet engraving work4. NO ASSEMBLY REQUIRED: As a professional engraving tool, the engraving module is fixed with spring clips without any screws. Wide range of engraving materials up to 5‑8mm5. WIDE USES: Can engrave wood, MDF, leather, paper, cotton, etc. Stainless steel, glass, transparent acrylic can be engraved after spraying. Bring you more creative work to cut and engrave on DIY business signs, greeting cards, miniatures, engraved children's drawingsSpecification:Item Type: NEJE Laser ModuleModel Number: N30820Heat Sink Material: Aircraft aluminum, brass shellLuminous Color: BlueLaser Diode: NUBM0A with NEJE Cap TechnologyLD Current: 3.2ASection Size: Approx. 30 x 30mm / 1.18 x 1.18inHeat Dissipation Method: 40mm copper core, heat sink, thermal grease, 15000rpm cooling fanInput Voltage: DC 12VCan Engrave: MDF, balsa, paper, wood, fabric, plastic, leather, plywood, foam, anodized aluminumCan Not Engrave: Metal, glass, stone, ceramic, PCB, stainless steel, reflective material, transparent materialTechnical Parameter: Input Power: 20WLaser Output Power: 5.5W (5500mW)Wavelength: 445-450nmBeam Shape: Dot (Focusable)Working Voltage: DC 12VTTL and PWM Modulation: Yes, compatible with TTL and PWM modulationInput Voltage: DC 12VPWM or TTL Input: DC3.3V-12VInput Interface: PH2.0-4Pin (+,-, PWM or TTL, Temperature), 3Pin (+,-, PWM or TTL) , 2Pin and 2Pin (+,-) and (PWM or TTL,-)Drive Mode: External ACCSafe Temperature Range: <70℃Service Life: 20,000 HoursTest: Material: Plywood, thickness 3mmSpeed ​​330, cut 3 times, each cut 1.0mmSpeed ​​200, cut 2 times, each cut 1.5mmSpeed ​​100, cut once, each cut 3mm.Package List:1 x E30820 Module1 x Air Pipe1 x Air Pipe Adapter1 x Interface Adapter Board3 x Wire1 x Module General User Manual1 x Sliding Card Slot2 x Hex Key2 x Accessories2 x Screws2 x Nuts2 x SpacersNote:The temperature interface can be disconnected, NEJE provides a text description of temperature acquisition on the wiki.