| Parameter | 3W-30K | 5W-30K |
| Wavelength (nm) | 355 | |
| Average Power (W) | >3W @30kHz | >5W @30kHz |
| Pulse Energy (μJ) | >100 | >160 |
| Specified Frequency (kHz) | 30 | |
| Repetition Rate Range (kHz) | 10–300 | |
| Beam Quality (M²) | <1.2 | |
| Operating Temperature (°C) | -5 to 40°C | |
| Average Power Consumption (W) | <110 | <130 |
| Power Supply Requirement (VDC/W) | 12V / 350W | |
| Weight (kg) | 5 (Air Cooling) / 4.1(Water Cooling) | |
FIT UV nanosecond Q-switched laser with compact size, lightweight design, superior beam quality, and 30% power margin. Air-cooled and water-cooled options for industrial precision applications.
Here is the professional English translation suitable for your overseas website:
FIT – Water Cooling
The newly launched FIT Series low-power 355nm UV laser features a clean and modern blue-and-white design. With a brand-new integrated structure, the FIT Series offers a compact and lightweight body, weighing only 4 kg, delivering a balanced and refined overall appearance.
Although the FIT Series is smaller in overall dimensions compared to the FOTIA Series, the mounting foot positions, body length and width, and output aperture height remain fully compatible with the FOTIA water-cooled models. This ensures seamless optical path integration, making installation and replacement convenient for customers. The interface design has been simplified, retaining only a 12V power supply port and a 25-pin signal interface. For compatibility, the 25-pin signal definition remains largely consistent with the FOTIA water-cooled series, with the addition of integrated RS-232 serial communication, now incorporated into the same 25-pin connector.
The FIT Series comes standard with an automatic power-on function and complete interface cables. Customers can flexibly connect the key switch interface, signal interface, and serial communication interface to their equipment platform, enabling easier integration and operation.
With outstanding cost performance, excellent beam quality, pulse energy up to 200 μJ, and an average power margin exceeding 30%, the FIT Series delivers superior user experience, simple operation, and fast, convenient system integration.
Here is the professional English translation suitable for your overseas website:
FIT – Air Cooling
The newly launched FIT Series all-in-one low-power air-cooled 355nm nanosecond UV laser features a clean blue-and-white design with a compact and integrated structure. Weighing only 5 kg, it offers a lightweight and well-balanced appearance.
Compared to the FOTIA Series, the FIT Series has a smaller overall footprint while maintaining strong compatibility for optical path integration, making installation and replacement easier for customers. The interface design is simplified, retaining only a 12V power supply port and a 15-pin signal interface. For compatibility, the 15-pin signal definition remains largely consistent with the FIT water-cooled version, with the addition of integrated RS-232 serial communication, now incorporated into the same 15-pin connector. The series comes standard with complete interface cables, allowing customers to flexibly connect the key switch interface, signal interface, and serial communication interface to their equipment platform for easier integration and operation.
We have integrated multiple advanced technologies into the third-generation FIT air-cooled laser, including real-time power optimization technology, innovative thermal management solutions, optoelectronic integration technology, and a new mechanical architecture, ensuring stable performance and reliable industrial application.
With outstanding cost performance, excellent beam quality, pulse energy up to 200 μJ, and an average power margin exceeding 30%, the FIT Series delivers superior user experience, simple operation, and fast integration. Featuring automatic optimization and real-time power display, broad application compatibility, and minimal space requirements, it is an ideal all-in-one laser solution for modern industrial systems.
Product Pictures

Product Introduction
The FIT Nanosecond Q-Switched Laser Series combines compact design, superior optical performance, and industrial-grade stability for demanding global applications.
Compact & Lightweight
The air-cooled model features a slim body size of 339×140×144 mm and weighs only 5 kg, significantly reducing system integration complexity.
The water-cooled UV version is even smaller at 264×139×114 mm and weighs just 4 kg, ideal for space-limited laser systems.
Outstanding Optical Performance
Built on advanced DPSS nanosecond Q-switch technology, the FIT series maintains excellent beam quality and stable output performance, ensuring precise and consistent processing results.
High Power Margin & Reliability
With an average 30% power redundancy, the water-cooled UV model ensures long-term reliability and extended operating life.
Extreme Temperature Stability
Engineered for harsh industrial environments, the air-cooled model operates smoothly in temperatures ranging from -5°C to 40°C.
The FIT series is widely used in electronics, precision marking, micro-processing, semiconductor applications, and high-end manufacturing industries.
Application Cases
3D Printing
Electronics & Electrical Appliances
Medical Industry
Dental Applications
Aerospace, etc.
Packaging Industry
Paper Packaging
Glass Packaging
Plastic Packaging
Pharmaceutical Marking
Metal Packaging, etc.
3C Marking
Marking on Mobile Phone Back Covers
Charger Marking
PCB Marking
Cable Marking, etc.




