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SFT is a well‑known brand in the elevator light curtain sensor market, producing safety door detectors that use infrared beams to prevent accidents when elevator doors close. Their sensors are widely adopted because of their reliability, compliance with international standards, and adaptability to different elevator systems.

Popular SFT Models

Model	Key Features	Specs / Notes
SFT‑632	High beam density (32 pairs, up to 154 beams), CE & CSA certified, IP54 rating	Detecting distance: 0–4000 mm; size: 10×24×2000 mm; 2‑year warranty
SFT‑632/G	154 beams, fast response (<80 ms), strong light immunity (>100,000 lux)	Detecting distance: 0–6000 mm; buzzer + LED indicators for diagnostics
SFT‑620/G	96 beams, compact design, response time <60 ms	Detecting distance: 0–6000 mm; dimension: 11×24×2000 mm; LED indicators for status
SFT‑620	Foldable light curtain, available with power supply box, multiple voltage options (AC220V, DC24V)	Suitable for elevators with varying door widths; quick installation

Advantages of SFT Sensors

• Safety Compliance: Certified under CE, CSA, and ISO standards.
• Durability: Resistant to dust, vibration, and strong ambient light.
• Flexibility: Multiple beam counts and detection ranges for different elevator sizes.
• Diagnostics: Built‑in LED indicators and buzzer alerts for easy troubleshooting.

Types of SFT Sensors

• 2 in 1 Infrared Elevator Light Curtain
• Side-opening Light Curtain
• Integarative 3D Light Curtain
• Homelift Light curtain

 

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SFT-520A-PC220N
SFT-620A-PC220N） 
917A61-AC220
SFT-820A1-P220N 
SFT-832A1-P220N 
SFT-632-PNP-NC
SFT-632-PNP-NC
SFT-632A1-P220N 
SFT-623A1-P220N
SFT-633K
932XD
932L-N 
SFT-620L-N 
SFT-623K
SFT-631A1-P220N
SFT-635A1-P220N
SFT-620-PNP-NC-GM/GS90
SFT-631H
SFT-632NNC-DC12V
RH-174A-NPN-NC
RH-EN-A4-NPN-NC
SFT-824A1-P220N
SFT-620NP
SFT-ES16-K40R-NC
SFT-632T
SFT-EB94X
SFT-632A6-P220N
SFT-620A6-P220N 
SFT-ES16-B36-PNP-NC-GM/GS90
SFT-620-PNP-NC-GM/GS90
SFT-639
SFT-620-NPN-NC