DDSK-J 500 m Outdoor Laser Beam
Leading Safety Light Curtain Manufacturer in China
Looking for reliable machine guarding solutions? DAIDISIKE is a premier safety light curtain manufacturer dedicated to protecting your workforce and machinery. As a trusted provider of advanced China light curtain technologies, we supply high-quality industrial safety systems tailored for the global safety light curtain market. From robust heavy-duty options to precision sensors, we are your on-site safety partners.
Advanced Safety Light Curtain Sensor & Type 4 Solutions
Our Type 4 safety light curtain (PL e / Cat.4 compliant) is engineered for heavy hitters like press brakes, power presses, and shearing machines where there's zero room for error. Every safety light curtain sensor we build ensures rapid response times and foolproof integration.
Versatile & Compact Safety Light Curtain Designs
Whether you need a heavy-duty setup with 14 mm / 30 mm resolution or a compact safety light curtain for tight automated packaging lines and robot cells, our IP65 / IP67 waterproof models won't flinch in oily, dusty or humid factory environments.
Competitive Safety Light Curtain Price from the Manufacturer
Because you are dealing directly with the safety light curtain manufacture team, we bypass the middleman. This ensures you receive the most competitive safety light curtain price along with complete wiring diagrams, datasheets and responsive technical support.
Why Partner with a Direct Safety Light Curtain Manufacturer?
In the realm of industrial automation, machine guarding is not a place for compromises. Sourcing directly from a reputable safety light curtain manufacturer like DAIDISIKE ensures that you receive uncompromised quality, full technical transparency, and factory-direct pricing. We specialize in designing and producing robust optical safety sensors that meet the rigorous demands of modern manufacturing facilities worldwide.
Engineered for High-Risk Machine Guarding
Our comprehensive portfolio covers everything from basic access control to high-risk point-of-operation guarding. Whether you are securing mechanical punch presses, hydraulic press brakes, robotic welding cells, or automated packaging lines, our Type 4 safety light curtains deliver fail-safe reliability. Featuring rapid response times (≤ 15 ms), redundant self-checking OSSD outputs, and high-resolution detection capabilities (down to 14 mm for finger protection), our sensors ensure absolute compliance with OSHA and CE safety directives.
Global Certifications: CE, RoHS, and IEC 61496 Standards
We understand that B2B procurement requires verified trust. Every safety sensor that leaves our facility undergoes strict quality control testing. Our products are fully CE-certified and engineered to comply with the stringent IEC 61496-1 / 2 standards for electro-sensitive protective equipment (ESPE). Encased in rugged, IP65 / IP67-rated extruded aluminum housings, our curtains are built to withstand heavy machine vibration, airborne dust, and coolant splashes common in harsh environments.
OEM / ODM Customization & Competitive Pricing
Unlike standard distributors, DAIDISIKE offers deep technical customization. From specific cable lengths and anti-vibration mounting brackets to custom protective heights and blind-zone-free designs (like our DQO series), our OEM and ODM services are tailored to fit your exact machinery footprint. By eliminating the middleman, we offer a highly competitive safety light curtain price without sacrificing the premium internal components that keep your production line running safely shift after shift.
Safety Light Curtain Products
JHW Solar Wireless Infrared Anti-Tamper Detector
AKT Outdoor Waterproof Infrared Beam Grating Detector
JNS Wired Infrared Detector — Anti-Sunlight, Anti-Theft
ABF Battery-Backed Infrared Wireless Sound & Light Alarm
DQA Safety Light Curtain Sensor
DQC Safety Light Curtain Hand Guard
DQB Safety Light Curtain Detector
DQO Blind-Spot-Free Safety Light Curtain
DQR Waterproof Outdoor Safety Light Curtain
DQL Detection & Measurement Grating
DQS Press Photoelectric Safety Guard Hand Protector
DQE Dual-Output Safety Light Curtain
DQSA Area Safety Protection Light Curtain
JER Optical Synchronization Safety Light Curtain
DQT Safety Light Grating
DQZ Safety Photoelectric Sensor
DQT4 Type 4 Safety Light Curtain
MK Safety Photoelectric Switch
DQLV Photoelectric Safety Screen
DQBT Light Curtain Safety Sensor
DQV Electro-Optical Safety Guard
DQM Photoelectric Safety Device
DCE Photoelectric Safety Barrier
DAIDISIKE Product Range
Browse our full selection of safety light curtains and industrial protection systems. From everyday machine guarding to heavy-duty waterproof setups for harsh environments, we've got you covered. Use the links below to download manuals or access 3D CAD files.
DQC Safety Light CurtainThe Industry Standard
This is our bread and butter. It's the model we ship the most because it's reliable, easy to align and gets the job done on standard presses or automation lines without any hassle.
Key Features
- Full range of resolutions (finger to body protection)
- Standard M12 connectors (PNP / NPN flexible)
- Comes with heavy-duty mounting hardware
- High immunity to factory floor electrical noise
Typical Applications
- Pneumatic and mechanical presses
- Packaging and stamping lines
- General-purpose machine guarding
DQE Safety Light CurtainFor Large Openings
Standard curtains can struggle with alignment over large gaps. We built the DQE with a reinforced housing specifically for tall or wide windows where rigidity is key.
Key Features
- High beam density for tall safety zones
- Dual-connector design for cleaner wiring
- Fast response times to minimize safety distance
- Stiff casing prevents flexing over long spans
Typical Applications
- Oversized press openings
- Robot workcells
- Long conveyor access points
DQA Safety Light CurtainHigh Performance
When productivity is the priority, you can't have false trips. The DQA series is our premium, high-speed line designed for environments that require maximum uptime.
Key Features
- Versatile beam spacing options
- Superior vibration and noise resistance
- Compatible with a wide range of mounting gear
- Stays reliable even near reflective surfaces
Typical Applications
- High-speed metal forming
- Automated assembly stations
- Robot safety perimeters
DQT Safety Light CurtainLarge Capacity
Need to cover a massive vertical area? The DQT series extends the beam count beyond standard limits, making it the go-to choice for tall gates and palletizing systems.
Key Features
- Extended beam counts for high-coverage areas
- Highly customizable height and spacing
- Pairs perfectly with external safety controllers
Typical Applications
- Tall machine access doors
- Palletizing and material handling
- Wide conveyor crossings
MK Mini Light CurtainSlim / Compact
If you're tight on space, the MK series is the answer. It's a slim, cost-effective option for small machines where a bulky sensor just won't fit.
Key Features
- Small-footprint housing
- Straightforward wiring for quick installs
- No complex configuration required
Typical Applications
- Small workbench protection
- Electronics assembly tools
- Compact automation cells
JER Safety Light CurtainEconomy Choice
The daily workhorse. This series offers great value for standard guarding tasks, providing reliable protection without the premium price tag.
Key Features
- Standard spacing for common industrial use
- Simple, no-fuss installation
- Works with all standard mounting brackets
Typical Applications
- General conveyors
- Packaging machinery
- Basic machine safety
DQO Blind-Spot-Free CurtainFull Coverage
Traditional light curtains often have 'dead zones' at the ends. The DQO protects the entire length of the unit, preventing hands from slipping through at the top or bottom.
Key Features
- True end-to-end detection (no dead zones)
- Flexible wiring configurations
- Very easy to align, even at short range
Typical Applications
- Low-clearance machine openings
- Precision tooling setups
- Close-proximity guarding
DQR Waterproof CurtainIP67 / Outdoor
Built for the messiest jobs. Whether it's coolant spray, oil or outdoor rain, the DQR is sealed tight to keep your line running in harsh conditions.
Key Features
- Fully sealed, waterproof housing
- Oil and coolant resistant
- Performs reliably in high humidity or outdoors
Typical Applications
- Outdoor gates and entryways
- CNC machining (coolant splash zones)
- Food and beverage washdown areas
DCE Safety Light CurtainFor Machine Builders
We designed the DCE with OEMs in mind. It's modular, easy to integrate into new machine builds and simple for end-users to maintain.
Key Features
- Huge selection of beam counts
- Clean wiring diagrams for easy integration
- Quick-swap design for faster servicing
Typical Applications
- OEM machine manufacturing
- Multi-station automation
- Custom equipment builds
DQZ Ultra-thin CurtainFront Thin (~17 mm)
When you're mounting to a very narrow frame, every millimeter counts. The DQZ has an incredibly slim front profile to fit right into the machine structure.
Key Features
- Ultra-slim 17.2 mm front profile
- Flexible cable routing for tight spots
- Available in multiple resolutions
Typical Applications
- Slim machine frames
- Panel-integrated safety
- Light-duty assembly stations
DQB Ultra-thin CurtainSide Thin (~15 mm)
This model is razor-thin from the side. It's designed to slide into narrow gaps between machine guards where traditional sensors won't fit.
Key Features
- Extremely narrow side profile (15 mm)
- Common 20 / 40 mm spacing options
- Low-profile brackets for flush mounting
Typical Applications
- Sliding doors and hatches
- Narrow gap guarding
- Compact machine retrofits
DQBT Ultra-thin (Optical Sync)Wireless Sync
Forget the sync cable. The DQBT uses optical synchronization, which makes retrofitting existing machines much easier since you have fewer wires to run.
Key Features
- No physical sync wire needed
- Slim-profile housing
- Drastically simplifies the wiring process
Typical Applications
- Retrofit and upgrade projects
- Small machines with limited wiring space
- Quick-install safety zones
DQT4 Type 4 Safety CurtainPLe / SIL3 Rated
This is our highest safety rating. When your risk assessment calls for full Type 4 / PLe protection, this is the unit you need for compliance.
Key Features
- Certified for PLe and SIL 3 standards
- High-speed response for hazardous motion
- Compatible with all major safety controllers
Typical Applications
- High-risk hydraulic machinery
- Robot cells requiring strict safety
- Hazardous automated zones
DQS Press Safety GuardComplete Kit
We've bundled everything you need for press safety into one package. This setup includes the specific controller logic required for punch press guarding.
Key Features
- Includes safety controller options
- Choice of internal or external relays
- Pre-configured for press safety cycles
Typical Applications
- Mechanical power presses
- Bending and shearing machines
- Safety upgrades for old presses
DQV Press Safety GuardAdvanced Setup
A flexible solution for press guarding that allows for more complex I/O logic and wiring, perfect for sophisticated forming lines.
Key Features
- Multiple controller compatibility
- Highly configurable I/O
- Supports complex safety sequences
Typical Applications
- Advanced press automation
- Large metal forming systems
- Custom safety logic builds
DQL Measuring CurtainAnalog Output
This isn't for safety — it's for measurement. Use it to check dimensions, profile shapes or send precise height data to your PLC.
Key Features
- Analog and RS485 communication
- High beam density for precise data
- Great at filtering out overhead lighting
Typical Applications
- Size and dimension checking
- Part profiling and counting
- QA inspection lines
DQM Measuring Curtain (Switch)Digital Output
The digital version of our measuring series. It's a great tool for simple 'is it there?' sensing or part counting on fast-moving conveyors.
Key Features
- Direct PNP / NPN digital outputs
- Fine beam spacing for small parts
- Excellent long-range sensing
Typical Applications
- High-speed part counting
- Presence detection
- Logistics and package sorting
DQLV Vehicle SeparatorTraffic / Tolls
Built to survive the toll road. The DQLV separates vehicles at gates or toll booths, designed to ignore environmental clutter and focus on the traffic.
Key Features
- RS485 and switching signal options
- Configurable heights for lane control
- Rugged housing for all-weather use
Typical Applications
- Toll collection gates
- Parking lot entry systems
- Vehicle access control
DQSA Area Safety CurtainWide-Area Guarding
When you need to guard a whole perimeter rather than just a window. It uses wider beam spacing to secure entire zones around machines.
Key Features
- Wide beam spacing for area coverage
- Pairs with standard safety controllers
- Cost-effective for large layouts
Typical Applications
- Large machine perimeters
- Warehouse AGV zones
- Robot cell entrance protection
What are the advantages of our products?
The Verdict: Quality Without Compromise
Premium Architecture
Unlike generic sensors, our units utilize top-tier imported components sealed with eco-friendly silicone, ensuring superior thermal stability and moisture resistance for extreme environments.
High-Precision Optics
Engineered with professional-grade convex lenses and high-quality filters, our light curtains offer an impressive 50 m detection range with total immunity to intense sunlight and glare.
Signal Integrity
Equipped with gold-plated aviation connectors and multi-layer shielded cabling to prevent EMI (electromagnetic interference), guaranteeing consistent, zero-fault performance.
Ruggedized Durability
From anti-deformation reinforced brackets to shock-absorbent custom foam packaging, every detail is built to withstand industrial rigors from transit to long-term operation.
Choose DAIDISIKE — protecting your personnel and your productivity with industry-leading technology.
Safety light curtain is a kind of photoelectric sensor used for industrial safety protection, which forms a protective area by transmitting and receiving infrared light beams, and triggers a safety signal when the light beams are blocked, preventing people or objects from entering the dangerous area. In modern factories, people and machines work together; on some potentially dangerous machinery — stamping machines, shearing equipment, metal-cutting equipment, automated assembly lines — the safety light curtain solves the operator-protection problem.
The safety light curtain consists of two parts: the light emitter and the light receiver. The emitter sends modulated infrared light, the receiver captures it, and together they form a protective net. When an object enters the net and blocks one or more beams, the receiver circuit reacts immediately and outputs a signal for emergency braking of presses, shears and similar machine tools.
Safety light curtains are called the “invisible shield” of the danger zone. The emitter sends evenly-distributed infrared rays under precise rules; the receiver continuously monitors light reception with a complete self-test function, and does not emit error signals on power failure or malfunction.
Resolution options and application scenarios
Depending on the application requirements, our safety light curtains offer a wide range of resolution options to meet the protection requirements of different scenarios:
| 2.5 mm / 5 mm | Fine detection | Suitable for precision measurements and small-object detection. The high resolution enables accurate detection of small objects and dimensions, particularly in electronic processing and precision assembly. DAIDISIKE DQL / DQM Series |
| 14 mm | Finger protection | Designed for finger-level protection — suitable for manual-intrusion detection on injection-moulding and stamping equipment. Adult finger diameter is ≥ 14 mm, so a 14 mm resolution light curtain effectively detects finger intrusion. |
| 20 mm / 30 mm | Palm protection | Suitable for general automation equipment. Palm thickness is ≥ 30 mm, so 20 / 30 mm resolution curtains effectively block the palm from entering hazard zones on machine tools and punch presses. |
| 40 mm and above | Body protection | Mainly used for limb / torso protection — applicable to large robotic-arm working areas. Wrist diameter is ≥ 40 mm, so curtains at 40 mm and above can detect human torso approach. |
| 80 mm / 200 mm+ | Vehicle / large objects | Suitable for large-object detection — AGV operating areas, logistics and warehousing. The large pitch design ensures detection while reducing cost. DAIDISIKE DQSA Collection |
The working principle is based on infrared-beam detection technology. On one side of the light curtain, infrared emitting tubes are installed at equal intervals; on the other side, the same number of infrared receiving tubes are arranged in the same way, each emitter aligned with its receiver.
When no obstacle blocks the line between emitter and receiver, the modulated optical signal reaches the receiver normally, and the corresponding internal circuit outputs a low level. When the beam is blocked, the receiver cannot detect the signal, and the corresponding internal circuit outputs a high level.
When no object passes through the light curtain, all modulating signals reach their receivers normally, and all internal circuits output a low level. Object presence or absence is detected by analyzing this state.
Integration with Time Delay Relay Modules
We often complement these light curtains with hold-up relay modules for next-level safety control. The output signals from our infrared grating safety devices act as the trigger for the relay's timed operations. If you need link components, we have our own — B2J0601 or E4J0101.
Let's Link the Modules
- Step 0: connect the unit's positive and negative power terminals directly to a DC power supply. Ensure the voltage suits (typically 12 V or 24 V DC).
- Next step: connect your intended device (alarm gear, motor contactors, etc.) between the relay's normally open (NO) terminal and common (COM) terminal.
Operational Logic
When someone or something trips the sensing area of the light curtain, the system discharges. For detailed reference, please check the product page or click “Contact Us”.
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Advanced Sensor Solutions for Industrial Safety and Automation
DAIDISIKE Corporate Profile
Discover our commitment to precision engineering and manufacturing.
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Vehicle DQLV Light Curtains
Optimized for toll stations and weighbridges profiling.
Measuring DQL Series 3D
Dimensional measurement and object positioning principles.
DQC Universal Grating
Installation guide for hand & finger safeguarding.
Waterproof DQR Series
Performance under high-pressure washdowns.
Color Mark Sensors
Intelligent recognition for high-speed packaging lines.
Strip DK-D461 Sensors
Advanced background suppression for irregular shapes.
Area DQSA Protection
Cost-effective side safeguarding using mirror reflection.
How to Choose the Right Safety Light Curtain:
A Salesman's Practical Guide
As a sales professional, I see it all the time: a customer lands on this page because they know they need a safety light curtain, but then they get stuck. With so many models available, how do you pick the right one without overthinking it?
It actually comes down to a few simple questions. Here is how I personally guide my clients to the best fit:
1. Start with Your Equipment
First, look at the machine itself.
- Heavy vibration? If you are working with heavy machinery like punch presses, vibration is your biggest enemy. In this case, I highly recommend the DQA or DQT series. They are tough, built for impact, and won't fail just because the machine shakes.
- Light automation? If you just need standard safety protection for lighter assembly lines or automation gear, go with the MK or JER Optical Synchronization series. They have built-in optical filters and are super easy to align. Plus, you don't need to wire a sync line, which saves a lot of time during installation.
2. Domestic vs. Export: What's Popular?
- The best value choice: the DQC series is hands down our best-seller. It has an excellent reputation for stability on equipment with moderate vibration and offers the best price-performance ratio for distances under 6 metres.
- For export markets: if you are shipping machines overseas, I usually suggest the DQE series. It features a dual-output design, making it much easier to connect with international PLC systems.
3. Check the Environment
Where will the light curtain live? Indoors or outdoors?
- Sun & rain: if the equipment is outdoors, facing rain or direct sunlight, you need specific protection. The DQSA series is perfect here — recognisable by its yellow floor-standing bracket.
- Special applications: we also have specialized options like vehicle separators for highway tolls. Or, if you simply need something robust against the elements, check out our DQR Waterproof series. It handles rain and sun exposure without breaking a sweat.
4. What's the Goal: Safety or Measurement?
- Just safety: any of the series I mentioned above will do the job perfectly.
- Measuring & counting: if you need to measure length, width or height of an object, or count items moving fast on a belt, safety curtains aren't enough — you need the DQL or DQM inspection series. They come with RS485 or RS232 ports for high-precision data in real time.
Still Not Sure?
Selection can be tricky if you haven't done it before. If you're still scratching your head, just reach out — chat with our online support or send an inquiry email. We'll get back to you ASAP.
There are more specs to cover than I can list here.
Click here to read our detailed Light Curtain Selection Guide.