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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: LNTECH
  • Model Number: SN,ST Series

Packaging & Delivery

Packaging Details: carton lined with plastic foam, with woven bag band outside.
Delivery Detail: Shipped in 3 days after payment


Safety Light Curtains (Machine Safety Light Barriers)
Laien Tech provide two series of safety light curtains; the ST light curtain series with20,40,80 mm beam spacing for limbs protection, and the SN light curtain series come with20,30,40,80mm spacing for limbs protection. These safety curtains are used for human protection and product/machine safety where risks cannot be eliminated by machine design and the process might require open and frequent access. 



Safety Curtain Series:

Operating power

AC220V/110V±15%,50/60Hz or DC24V

Output contact capacity

AC250V5A, cosφ=0.3

Power consumption


Ambient temperature

-10°C ~ 50°C


20°C, <=85%RH

Response time


Insulating resistance


Dielectric strength:

AC1500V, 60s

Resistance to light interference

10000LUX(angle of incidence≥5°)

Life of relay

1,000,000 times(replaceable)


Sensor: IP65

W, S type controller: IP54

N type controller: IP20

Z type controller: IP54

Optical axis pitch

STF series: 40mm

STD series:20mm,40mm,80mm

STQ series: 20mm,40mm,80mm

SNA series: 20mm,30mm,40mm,80mm

SNB series: 20mm,30mm,40mm,80mm

SNQ series: 20mm,30mm,40mm,80mm

Protective range

STF series: 400~3000mm

STD series: 0~15000mm

STQ series: <=12000mm(2 sides), <=8000mm(3 sides)

SNA series: 0~3000mm

SNB series: 0~8000mm

SNQ series: <=6000mm(2 sides), <=4000mm(3 sides)

Protective height

Protective height H=(xx -1)×optical axis pitch, xx is the number of light beams

Main Parameters:

Power Supply



 Quick-connect/disconnect models (aviation plugin terminal)



Double Relay, NPN/PNP outputs


Sensor sealing:IP65, Controller: IP54

Vibration resistance

IEC/EN 61496-1:Frequency range,10-55Hz;

Sweep rate,1 octave/min; Amplitude,0.35±0.05mm;

Number of sweeps,20 for each axis,for 3 axes

Dielectric strength

AC1500V, 60s

Insulation resistance


Ambient light

10,000 lux (incidence angle >5 degrees)

Circumstance Temperature

 -10 to +55°C


20°C, <=85 %RH


Please contact us any time to require the latest illustrated catalogue to optimize your choice !!



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China (Mainland) | Manufacturer, Trading Company
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1 Transactions 100+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.