SH4 UV Therapy Unit

Lamps number:4UVA or UVB lamps


The SH-4 ultraviolet phototherapy unit is another one of SIGMA’s of minitype ultraviolet phototherapy units. It is mainly used for MED test, psoriasis, vitiligo, etc.

Psoriasis, Vitiligo, Chronic eczema, Neurodermatitis, Atopic dermatitis and other similar skin diseases.

Philips UVA or UVB ultraviolet low-voltage lamp, offering high-intensity radiation, short treatment time, and few side effects.
Digital timer.
MED testing determines each patient’s sensitivity to the ultraviolet enery being prescribed.

Technical parameters
Input voltage/frequency: 220v±10%/50HZ
Input power: ≤100VA
Effective irradiation coverage:11.0*16.0 c㎡

Irradiator dimensions:39.6×21.0×5.2c㎡
Environmental temperature: 10℃ - 30℃
Environmental humidity:45%~75%
Weight: ≤ 4.0Kg
Lamp disposition ( optional)
Lamp type        Wavelength range
PL-S9W/01       311~313nm
PL-S9W/10       340~400nm
PL-S9W/12       280~320nm
Number of lamps   4UVA or UVB lamps


Use Effect

1、How many kinds of ultraviolet phototherapy units does SIGMA make? How should I choose?

The products are divided into three kinds according to the wave band for ultraviolet phototherapy units: narrow UVB, broad UVB and UVA.
Narrow UVB and broad UVB can be irradiated separately so there is no need to combine the light therapy with medication. Currently, narrow UVB is most commonly used band in the world because it has few side effects.
Broad UVB is used less because it causes sunburn easily. Always consult with your doctor before choosing a home therapy unit.

2、How should I protect myself during the treatment?

a. You should always wear UV goggles during the irradiation process
b. Normal skin should covered properly with clothes

3、Does light therapy have any side effects?

Compared with medicine, phototherapy has few side effects. Common side effects for treatment are similar to sunburn and include erythema and aches.
If sunburn-like symptoms occur, you should stop treatment and resume only after the erythema has faded.If serious sunburn occurs, you can use Nonsteroidal Anti-inflammatory drugs or corticosteroid.If blisters occur, you should consult your doctor.

How To Buy

Address:Rm 2601,Building D, Everbright Convention &Exhibition Center,No.80,Caobao Road.

Zip Code: 200235

Tel: 86 21 - 64325358

Fax: 86 21 - 64325357




SIGMA offers a full one-year warranty on all of our products. During the warranty period, SIGMA is responsible for free product repair or replacement in case of natural quality problems.
SIGMA will pay any shipping costs for product repair or replacement for one year.
If problems occur after one year, you can call the special service line at 8621-6435358 or the after-sale service line at 8621-64325736.
We offer full maintenance and service. For those in the high-usage category, we advise replacing the lamps after 500 hours of use. SIGMA can replace lamps and demarcate their output intensity.

Sigma has a large number of patents and has been regarded as a "Shanghai Hi-tech Enterprise" since 2001. Our independent research and development for the SS-03 and SS-05 ultraviolet phototherapy units won us the “Shanghai A-level High-Tech Achievements Transformation Project" in 2002.
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