High Sensitivity Infrared Safety Light Curtain for Rolling Shutter Garage Doors
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Product Highlights
- High Sensitivity Detection: Minimum resolution 40mm with max detection distance up to 10m.
- Door Blanking Function: Distinguishes closing door from objects by ignoring blocked beams sequentially.
- IP67 Waterproof Rating: Integrated molding housing ensures high waterproof performance.
- High Ambient Light Resistance: Operates effectively under ambient light up to 100,000 Lux.
- Compact Design: Housing section size is only 12mm x 15.5mm for easy installation.
- Flexible Control Output: Supports both NPN and PNP optional control outputs.
- CE Certified: Product meets CE certification standards for safety and quality.
- Corrosion Resistant: Metal material construction ensures durability and resistance.
Product Attributes
- Type
- Through Beam Sensor
- Output Signal Type
- Switching Type
- Production Process
- Integration
- Model NO.
- LEM
- Material
- Metal
- Feature
- Corrosion Resistant
- IP Rating
- IP67
- Certification
- CE
- Customized
- Customized
- Sensing Distance
- 1-10m
- Control Output
- NPN, PNP Optional
- Housing Section Size
- 12X15.5mm
- Light Source
- Infrared Thru Beam Sensor
- Transport Package
- Carton Box, or Customized
- Specification
- According to order size
- Trademark
- G-TEK
- Origin
- China
- HS Code
- 9032900090
- Production Capacity
- 10000PCS/Year
- Package Size
- 30.00cm * 20.00cm * 120.00cm
- Package Gross Weight
- 3.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description

Minimum resolution 40mm
The max. detection distance 10m
Compact design 12 * 15.5mm with Door Blanking function
Integrated molding housing, high waterproof performance
High response, suitable for high-speed doors
Beam pitch equivalent to imported products
Optical synchronization, easy to install
Multiple TEST selection modes, suitable for various door control systems
High ambient light resistance up to 100000Lux
| Parameter | Model NO. LEM |
| Sensing Distance | 1-10m |
| Protection Height | MAX.2,520 mm |
| Number of Optical Axes | 8 to 64 optional |
| Supply Voltage | 10 to 30 VDC |
| Quiescent Current@24VDC | Tx<70mA Rx< 30mA |
| Control Output | PNP/NPN |
| Housing Section Size | 12 mm × 15.5 mm |
| Enclosure Rating | IP67 |
| Ambinenet Operating Temperature | -40ºC~65ºC |
| Anti-light Interference | >100,000lux |
| Angle | Tx: ≤ ±5° Rx: ≤ ±20° @3m |
| Blanking Function | Yes |

Door light curtain contains a series of photo eyes vertically aligned in a row,The light curtain extend the protection height of the door to provide expanded coverage. therefore this is the better option for protection against entrapment compared with photo sensor.
Door Blanking
Door Blanking function allows the detector to be positioned in the guide tracks of a industry door, where the door travels directly in the front of protection area, interrupting the beams sequentially from the top to bottom. The function ensures the system can distinguish between the closing door and the object by ignoring the beams that are blocked by the moving door while ensuring the below remaining beams active to detect people or object below the door edge.
Starting from the first beam at the light curtain output end, the beams are sequentially blocked, and there is no output from the light curtain during the process.
- Photoelectric Sensor (PMF21/PMF50/PMF55/PMF80 /PM18/PS18/PT12 series)
- Proximity Sensor (IM12/IM18/IM30/IF17 series)
- Infrared light curtain (LSM/LSMC/LSE/LSEC series)
- Light curtain, photocell
- Infrared vehicle separator (LHA/LHAC/LHN/LHNC series)
- Loop detector (GVD3/GVD1 series)
- Laser radar (LSD/LND series)
- 3D TOF product (GDC1100/GDC1101/GDC1102)
- Other sensor product (Microwave radar, Revolving door Anti-pinching sensor)




Q: What kind of products do you manufacture?
A: Our products includes photocell sensor, proximity switch, infrared light curtain, Vehicle separator, Loop detector and laser radar.,etc.
Q: Can I get some samples?
A: Yes, Sample orders are welcomed.
Q: Have photocell sensors 100% assembled well in stock?
A: We have some standard photocell sensors in stock with limited quantity; While
almost all photocell sensors will be newly produced according to your order.
Q: What is the delivery time?
A: 15-30 days for mass production depends on different products
Q: What is your MOQ?
A: We provide small MOQ for each item; it depends on your specific order.
Q: Do you have customization service?
A: Yes, We can provide customized products while the customization needs to meet certain quantity.
Q: Do you test all goods before delivery?
A: Yes, We have 100% test before delivery.
Q: What is your payment term?
A: We usually use 100% T/T in advance; West union and Paypal are also available for small order.
Q: Do you provide warranty for the goods?
A: Yes, We provide warranty for all the goods from us. For the sensor product the warranty is 15 months, For the light curtain , laser radar product the warranty is 18 months.
Q: May I visit your factory?
A: Sure, You are always welcome to visit us.
About the Supplier
This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR246350". Items marked "" are certified.
Company Profile
Tianjin G-TEK sensor technology Co., Ltd is indicated in providing intelligent sensor products and customized solutions for logistics automation, factory automation and process automation. The predecessor of the company is Tianjin G-TEK automation technology Co., Ltd, a professional sensor manufacturer and sensor solution provider, which was established in 2003 with business ranges from Proximity switch, photoelectric sensor, measurement and safety light curtain to Laser rangefinder sensor, laser radar., etc and serves for Intelligent buildings, intelligent transportation, logistics automation, factory automation and industry robot fields.
Aimed at providing advanced product and solution for worldwide business, we have build our professional R&D team with excellent talents on mechanical and motion control system, Optical system, embedded system, electronic, software and automation fields; The plant operation team with professional process engineer, qualitycontrol engineer and passionate manufacturing mechanics; Also the sales team with rich experience in sensor product and applications. In 2019, the total sales volume of various products including proximity switch, photoelectric sensor, light curtain and laser radar in different fields is up to 800, 000 pieces (sets).
Adhering to the core philosophy of "devotion with enthusiasm, pursuit of perfection ", G-TEK will cater to the demands on product and service of customer by continuous technological innovation.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- No. 6 Guangyuan Road, Zhangjiawo Town, Xiqing District, Tianjin, China
-
Plant Area
- 8042.38 square meters
-
Number of Employees
- 77
-
Registered Capital
- 20,000,000 RMB
-
Terms of Payment
- T/T, LC, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Tianjin Port
-
Minimum Order Quantity
- 1 unit
-
Supply Chain Partners
- 7
Our Production Capability & Technical Expertise
-
Main Products
- Lidar, Photoelectric sensors, Light curtains, Proximity sensors, Vehicle monitoring systems
-
Production Lines
- 3
-
Production Machines
- Coil winding machine, Injection molding machine, SMT machine, Ultrasonic turntable machine, Ultrasonic welding machine, Tester
-
QA/QC inspectors
- 3 people
-
Inspection Type for Finished Products
- Random inspection(Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
R&D Engineers
- 17 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2014-06-04
-
Export Year
- 10 years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 3
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015
-
Cooperated with Fortune 500
- No
FAQ
- What kind of products do you manufacture?
- Our products includes photocell sensor, proximity switch, infrared light curtain, Vehicle separator, Loop detector and laser radar.,etc.
- Can I get some samples?
- Yes, Sample orders are welcomed.
- Have photocell sensors 100% assembled well in stock?
- We have some standard photocell sensors in stock with limited quantity; While almost all photocell sensors will be newly produced according to your order.
- What is the delivery time?
- 15-30 days for mass production depends on different products
- What is your MOQ?
- We provide small MOQ for each item; it depends on your specific order.
- Do you have customization service?
- Yes, We can provide customized products while the customization needs to meet certain quantity.
- Do you test all goods before delivery?
- Yes, We have 100% test before delivery.
- What is your payment term?
- We usually use 100% T/T in advance; West union and Paypal are also available for small order.
- Do you provide warranty for the goods?
- Yes, We provide warranty for all the goods from us. For the sensor product the warranty is 15 months, For the light curtain , laser radar product the warranty is 18 months.
- May I visit your factory?
- Sure, You are always welcome to visit us.
Send your message to this supplier
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