Why choose us?
The professionally trained CYNDAR team sales engineers have deep product technology reserves, cross-domain application experience and industry experience. This experience and expertise enables us to accurately match customer needs, quickly output customized solutions, and shorten decision-making cycles. Help customers maximize value through efficient communication and technical empowerment.
WhatsApp instant online customer service
We have established a dedicated customer service team that can quickly reply to customers, so your after-sales issues can be responded to quickly.


Product training and after-sales support
CYNDAR supports customers with rich on-site manufacturing and automation technology knowledge. Our sales engineers are ready to provide full support at every level of the business, from the design and research phase to model selection, production line operation with on-site guidance, and after product adoption.
Fast delivery
Most orders can be shipped within 2~3 days.
We have a lot of stock. Ensure that customers can get the products they need at any time. If it is a customized type product, we can also ship quickly, and the production cycle is usually only 2~5 days. Please consult sales for larger orders.


Cyndar Quality Inspection Department
We adopt a strict quality control system and service system. Quality inspectors conduct strict tests on products according to international standards (such as EU, North America, etc.) to ensure zero defects in delivery.
What is a safety light curtain?
The structure of the safety light curtain consists of a transmitter and a receiver
Safety light curtains form a protective barrier through infrared beams, monitor dangerous areas (such as stamping machines, robot workstations) in real time, and when a person or object blocks the beam, the device will immediately trigger an emergency stop or alarm to prevent mechanical damage. It has high-precision detection and anti-interference design, supports linkage with PLC/safety relays, ensures compliance with EN ISO 13849 safety standards, and takes into account production efficiency and personnel protection.
● Defines the self-monitoring and safety principles contained in the device; it must be chosen as a function...
Beam Spacing: 40 mm
Protective Height: 760 mm
Detection Distance: 0.3-6 M
Secure Outputs (OSSD): 2 PNP NC
Package: 1 receiver and 1...
Beam Spacing: 10 mm
Protective Height: 50 mm
Detection Distance: 0.3-6 M
Secure Outputs (OSSD): 2 PNP NC
Package: 1 receiver and 1...
● Building safety circuit without install relay module, Safety Light...
● With such watertight housings, Waterproof Safety Light Curtain for Industry can be used in the...
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Industrial automation equipment protection
In heavy-duty processing equipment such as stamping machines, hydraulic presses, and press brakes, safety light curtains serve as core safety protection devices, installed around hazardous operating areas. If an operator's hand, arm, or other body part accidentally enters the equipment's motion zone (such as the closed area of a stamping die or the operating range of a machine tool), the safety light curtain instantly detects the obstruction and sends a stop command to the equipment control system, forcing an emergency shutdown. This prevents injuries caused by crushing or cutting of limbs. This safety light curtain is particularly suitable for mass production operations where operators frequently operate close to the equipment.
Product application
Hot Products
Use cases of safety light curtains

Stamping machinery protection
Application description:
In automobile manufacturing or metal processing workshops, the high-pressure mold of the stamping machine may cause the operator's limbs to be crushed when closing. The safety light curtain is installed at the entrance of the mold to form an infrared beam barrier. When the operator's hand enters the danger zone, the safety light curtain triggers a signal to stop the stamping action.
Technical features:
- Response time ≤ 20ms to ensure rapid shutdown.
Automated packaging line
Application description:
On the food or drug packaging line, equipment such as sealing machines and packing robots need to interact frequently with personnel. The safety light curtain surrounds the dangerous area of the equipment to prevent people from accidentally touching high-temperature sealing parts or mechanical grippers.
Technical features:
- Anti-interference design (such as dustproof and waterproof), suitable for humid or dusty environments.
- Linked with the equipment PLC, triggering an alarm and recording the number of illegal operations.


Welding robot workstation
Application description:
In the automobile welding workshop, the robot welding arm moves at high speed and produces high-temperature splashes. The safety light curtain surrounds the workstation into a closed area, and the robot is immediately paused and the arc is turned off when a person breaks in.
Technical features:
- Anti-electromagnetic interference to prevent welding current from affecting signal transmission.
- With a safety door lock, "double insurance" protection is achieved.
Logistics sorting system
Application description:
In the storage and logistics center, the rollers and mechanical diversion devices of the automatic sorting machine may pinch maintenance personnel. The safety light curtain is installed at the entrance of the equipment maintenance channel, and the sorting system is suspended when personnel enter.
Technical features:
- Multiple areas are detected independently, and blocking only part of the beam will not trigger shutdown by mistake.

Core advantages of safety light curtains
1. Non-contact protection: no physical barriers are required to ensure production efficiency.
2. Flexible configuration: adjustable beam density (such as 10, 14mm resolution for finger protection, 30, 40mm for palm protection, 80, 200mm for body detection).
3. Compatibility: supports integration with safety relays and industrial buses (such as Profibus, EtherCAT).
The above scenarios show the key role of safety light curtains in mechanical safety, human-machine collaboration, environmental adaptation, etc. It is recommended to select the protection level and installation plan according to specific industry needs
Selection method of conventional light curtain
When purchasing safety light curtains, you need to provide the following 5 data to our salesperson
Protection height or total height
Protection height calculation method: number of beams * optical axis spacing - 1 optical axis spacing, for example, the optical axis spacing of the safety light curtain is 14mm, the optical axis spacing is 20, and the protection height is 14*20-20=260mm
01
Optical axis spacing?
For example, finger protection has a resolution of 10, 14mm, palm protection has a resolution of 30, 40mm, and human body detection has a resolution of 80, 200mm.
02
Interference distance
The distance between the transmitter and the receiver, in meters
03
What is the output?
EThe output of the safety light curtain includes NPN (NC or NO)\PNP (NC or NO)\relay output (1NC\1NO).
The most people usually order PNP NC.
04
Is it necessary to match the controller?
Two controllers
1: Light curtain controller - model is QCA (AC 110V~220V, single channel, automatic reset)
2. Safety relay - model is SRC106 (DC24V, with manual reset function and automatic reset function)
05
As one of the most professional safety light curtain manufacturers in China, we're featured by cheap products and good service. Please rest assured to buy high quality safety light curtain at competitive price from our factory.
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