KL-LED-SZ4 Multi-Petal LED Operating Lamp

The Keling KL-LED-SZ4 is an LED shadowless operating lamp with a distinctive multi-petal lamp head, delivering 40,000–120,000 lux illumination at 1 m, a 50,000-hour LED service life and a color rendering index of Ra 100. It is manufactured by Keling Medical (Jiangsu Keling Medical Appliances Co., Ltd.) and is available in single-head and dual-head configurations for operating rooms, surgical suites and medical centres.

Illuminance at 1 m: Up to 120,000 lux
Colour temperature: 4,500 ± 500 K
Colour rendering: Ra ≥ 85
Mounting: Ceiling

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Overview

The KL-LED-SZ4 LED shadowless operating lamp is engineered for modern surgical environments that demand reliable, high-intensity illumination without the shadows that can obscure tissue detail. Its multi-petal lamp head design distributes LED arrays across independent reflective segments, creating a naturally shadowless light field that can penetrate deep body cavities and maintain even coverage across the operative field. A single-head (KL-LED-SZ4) and a dual-head (KL-LED-SZ4/SZ4) configuration are available to suit the size and complexity of the surgical suite.

Advanced LED cold-light technology eliminates infrared radiation, keeping the surgical site and surrounding tissue cool. High-thermal-conductivity heat dissipation materials manage the LED thermal load, resulting in a temperature rise that remains low even during extended procedures. The optical PC lens with anti-glare coating delivers a clean, comfortable beam quality for both surgeon and patient, and the sterilizable handle with focus-size adjustment can be detached and autoclaved without special preparation.

Multi-joint balanced suspension arms provide smooth, stable movement and precise positioning; the lamp head can be repositioned with minimal effort and holds its position securely once set. An intuitive touch control panel on the lamp allows quick adjustment of illumination level and on/off switching without leaving the sterile field, while the 270–320 cm ceiling height range for installation covers most standard operating room configurations.

Quick facts

The Keling KL-LED-SZ4 is an LED shadowless operating lamp designed for a wide range of surgical scenarios requiring bright, uniform, shadow-free illumination.
Illumination at 1 m ranges from 40,000 to 120,000 lux; optional color temperature is 4500 ± 500 K.
Color rendering index is Ra 100 (Ra ≥ 85), ensuring accurate tissue color differentiation.
LED service life is 50,000 hours; maximum power consumption is 80 W per head.
Light field diameter at 1 m is 10–28 cm; D10 light field is 180 ± 40 mm; D50 light field is 110 ± 35 mm.
The KL-LED-SZ4 uses an optical PC lens with anti-glare treatment and operates on 110–240 V, 50/60 Hz, making it suitable for international installation.

Key features

High-Intensity Shadowless Illumination40,000–120,000 lux at 1 m with a multi-reflector optical design that eliminates shadows in deep body cavities.
Optical PC Lens with Anti-Glarereduces glare and scatter for comfortable, high-clarity illumination across the operative field.
50,000-Hour LED Lifelong-service LED beads and durable components reduce replacement frequency and total cost of ownership.
Low Heat Outputadvanced LED cold-light technology and high-thermal-conductivity heat dissipation keep the surgical area cool.
Ra 100 Color Renderinghighest CRI index (Ra ≥ 85 minimum) ensures accurate tissue color recognition and reduces diagnostic ambiguity.
Sterilizable Handledetachable, autoclavable handle with focus-size adjustment maintains hygiene protocols without interrupting workflow.
Flexible Arm Positioningmulti-joint balanced arms allow smooth, stable positioning with precise control over lamp head angle.
Wide Voltage Rangeoperates on 110–240 V, 50/60 Hz, enabling installation in hospitals across different power standards worldwide.

Technical specifications

Specifications are subject to change; dimensional tolerances may apply. Contact Keling Medical for the latest datasheet.

KL-LED-SZ4 technical specifications
Model	KL-LED-SZ4 / KL-LED-SZ4 (dual head)
Illumination at 1 m (lux)	40,000–120,000 (optional color temperature 4500 ± 500 K)
Light field diameter at 1 m (cm)	10–28
Light field diameter D10 (mm)	180 ± 40
Light field diameter D50 (mm)	110 ± 35
Color rendering index (Ra)	100 (Ra ≥ 85)
LED life (hours)	50,000
Illumination depth (cm)	150
Number of LEDs	32 / 32
Average hue life (hours)	50,000
Power supply	110–240 V, 50/60 Hz
Max. power consumption (W)	80 W / 80 W
Ceiling height for installation (cm)	270–320
Working distance (cm)	70–140

Applications

The KL-LED-SZ4 LED shadowless operating lamp is suited for general operating theatres, orthopaedic and spinal surgery suites, cardiovascular and thoracic suites, neurosurgery rooms, ENT and ophthalmic theatres, and ambulatory surgical centres. It also serves day-surgery facilities and procedure rooms where bright, consistent illumination is required for extended periods.

Detail sheets

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Frequently asked questions

What is the KL-LED-SZ4 used for?

The KL-LED-SZ4 is a ceiling-mounted LED shadowless operating lamp designed for surgical illumination in operating theatres and procedure rooms. Its multi-petal LED array delivers 40,000–120,000 lux of shadowless, cool white light with Ra 100 color rendering to support accurate tissue visualization during surgery.

What is the LED life and power consumption of the KL-LED-SZ4?

The KL-LED-SZ4 has an LED service life of 50,000 hours and a maximum power consumption of 80 W per lamp head. It operates on 110–240 V, 50/60 Hz, making it compatible with hospital power systems in most countries.

Is the handle of the KL-LED-SZ4 sterilizable?

Yes. The KL-LED-SZ4 is fitted with a detachable, autoclavable handle with integrated focus-size adjustment. It can be removed and sterilized following standard hospital protocols, supporting aseptic technique in the operating field.

Can distributors purchase the KL-LED-SZ4 in bulk for hospital projects?

Yes. Keling Medical is an export-oriented surgical light manufacturer supplying hospitals, distributors and project contractors worldwide. Both the single-head and dual-head KL-LED-SZ4 configurations are available for wholesale and OEM orders through Keling Medical's Shanghai export center; contact our export team for pricing.