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BurookHi Norman... I just remembered i didn't let u know.... everything worked out we made both the wired and the remot control opening work... they loved the item (assuming it will hold its own for the next 10 years or so) -
KiranYes I don’t doubt you. Jutai is one of the most confident companies I came across in China
Industrial Door Protection Light Grid with CE Certification & IP67 Enclosure
| Place of Origin | China |
|---|---|
| Brand Name | JUTAI |
| Certification | CE |
| Model Number | CL20-8L |
| Document | CL05-8L User Manual.pdf |
| Minimum Order Quantity | 1 |
| Price | Negotiation |
| Packaging Details | Cartoon |
| Delivery Time | 5 - 8 working days |
| Payment Terms | T/T,L/C,D/A,D/P,Western Union,Paypal,,Alipay |
| Supply Ability | 1000 pieces per month |
| IP Rating | IP67 | Function | Blanking |
|---|---|---|---|
| Sensing Distance | 8m | Material | Aluminum Alloy |
| Feature | Corrosion Resistant | Power Voltage | DC12-24V |
| Operating Temperature | -20~60℃ | Operating Current | <50mA |
| Output | No/Nc, COM | Working Current | <20mA@DC12V-24V |
| Specification | 2000*21*15 Mm | ||
| Highlight | Industrial door protection light grid,CE certified light curtain,IP67 enclosure light grid |
||
The JUTAI CL20-8L Industrial Door Protection Light Grid is a CE-certified safety sensing solution designed exclusively for industrial door scenarios. It forms an 8-beam invisible protective grid between the emitter and receiver, instantly triggering safety responses (door reversal, stopping) when personnel, objects, or equipment intrude the detection area. With an IP67 waterproof/dustproof enclosure and rugged aluminum alloy construction, it delivers reliable anti-pinch and intrusion protection for industrial doors in harsh industrial environments, ensuring compliance with safety standards and operational continuity.
| Parameter | Specification |
|---|---|
| Model | CL20-8L |
| Certification | CE certified (compliant with safety standards for industrial machinery) |
| Protection Rating | IP67 (dustproof + waterproof) |
| Housing Material | Aluminum alloy |
| Working Voltage | DC12-24V |
| Working Current | Transmitter: <65mA @DC12V; Receiver: <20mA @DC12V |
| Output Configuration | NO/NC relay output (default NO, configurable to NC); COM terminal included |
| Operating Range (Emitter to Receiver) | 1-8m |
| Maximum Protection Height | 1729mm |
| Number of Photocells | 8 beams |
| Cable Length | Transmitter: 8m; Receiver: 4m |
| Connector Type | Transmitter: 5-pole M8 male connector; Receiver: 5-pole M8 male connector |
| Operating Temperature | -20°C ~ +60°C |
| Key Function | Industrial door anti-pinch protection + Blanking Mode (anti-false alarm) |
| LED Status Indicators | Transmitter: Steady blue (normal operation); Fast-flashing red (voltage <9V or >28V) Receiver: Steady red (object/personnel blocked); Steady blue (no obstruction); Flashing blue (first power-on, emitter-receiver misalignment) |
| Installation Hole Dimensions (Unit: mm) | 14, 29, 75, 80, 175, 19.7, 21.4, 259 |
- CE Certification & Safety Compliance: Meets international safety standards for industrial machinery, ensuring compliance with workplace safety regulations in global industrial settings. Rigorously tested for reliability and safety.
- IP67 Enclosure for Harsh Environments: Fully dustproof and waterproof, withstanding temporary water immersion, heavy dust, and industrial contaminants. Aluminum alloy enclosure resists mechanical wear, vibration, and corrosion.
- Targeted Industrial Door Protection: 8-beam light grid covers the full height of industrial doors (1729mm), eliminating safety blind spots and accurately detecting intrusions to prevent pinching/crushing accidents.
- Blanking Mode for False Alarm Prevention: Specialized for industrial door gaps - blocking the first channel does not trigger safety responses, adapting to sequential beam blocking during normal door closure.
- Easy Installation & Intuitive Operation: Color-coded wiring simplifies connection to industrial door control systems. LED indicators provide real-time status feedback for quick troubleshooting.
| Component | Wire Color | Function | Detailed Notes |
|---|---|---|---|
| Transmitter | Red | DC12-24V Positive Power Supply | Connect to a stable DC power supply; avoid overvoltage/undervoltage to prevent device damage |
| Transmitter | Black | Ground (GND) | Connect to power supply negative terminal; ensure reliable grounding to avoid signal interference |
| Transmitter | Green | Reserve | No connection required for basic use |
| Transmitter | Yellow | Reserve | No connection required for basic use |
| Transmitter | White | Reserve | No connection required for basic use |
| Receiver | Red | DC12-24V Positive Power Supply | Use the same power source as the transmitter for consistent voltage |
| Receiver | Black | Ground (GND) | Shared ground with the transmitter to ensure signal stability |
| Receiver | Green | NO/NC Output (Default NO) | Connect to the industrial door control system's safety signal input terminal |
| Receiver | Yellow | Configurable NC | Switches to NC output after Blanking Mode activation (matches door control system requirements) |
| Receiver | White | COM (Common Terminal) | Must be connected to the door control system's corresponding terminal for normal output function |
- Complete wiring according to the Wiring Guide and confirm no connection errors.
- Power on the light grid (ensure the power supply meets DC12-24V requirements).
- Within 1 minute of power-on, touch the receiver's Green wire (NO output) to its Black wire (GND) five consecutive times.
- Observe the receiver's Red light blinking - this indicates successful activation: The Yellow wire switches to NC mode, and Blanking Mode is enabled.
- Test the function: Normal door closure (blocking the first channel) will not trigger safety responses; intrusion of personnel/objects will trigger immediate door reversal/stopping.
- Industrial Fast Doors: High-speed roll-up doors in factories, logistics centers, and production lines.
- Roller Shutter Doors: Industrial roller shutters in warehouses, workshops, and loading docks.
- Sectional Industrial Doors: Large industrial doors in factories, storage facilities, and industrial parks.
- Special Environment Industrial Doors: Cold storage industrial doors, outdoor industrial doors, and dusty workshop doors (resistant to temperature extremes, dust, and moisture).
| Fault Symptoms | Possible Causes | Detailed Solutions |
|---|---|---|
| Receiver's blue light flashes continuously after power-on | Emitter and receiver misalignment (light beams not paired) | 1. Adjust the mounting positions to ensure both devices are parallel. 2. Remove obstacles blocking the light path between emitter and receiver. 3. Tighten mounting screws to avoid vibration-induced misalignment. |
| Transmitter's red light flashes fast | Power supply voltage <9V or >28V | 1. Use a multimeter to test the power supply voltage. 2. Replace with a stable DC12-24V power supply. 3. Check for voltage drops caused by long cables and replace with thicker cables if necessary. |
| Light grid works normally (LED indicators correct), but door has no anti-pinch action | Wiring error (incorrect connection of NO/NC or COM terminal) | 1. Recheck wiring against the guide - ensure Green/Yellow (output) and White (COM) terminals are connected to the door control system's safety interface. 2. Verify the door control system is set to "external safety sensor input" mode. |
| Unable to enter Blanking Mode | 1. Operation exceeds 1-minute window after power-on 2. Light leakage during door descent 3. Bottommost beam blocked by debris 4. Door/obstruction fails to meet minimum continuous blocking distance | 1. Power off and restart, then activate within 1 minute. 2. Fix door sealing to prevent light leakage. 3. Clear debris blocking the bottommost beam. 4. Adjust the door or obstruction to meet the continuous blocking distance requirement. |
- Pre-Installation Preparation: Confirm the industrial door's opening height and width - ensure the light grid's protection height (1729mm) and operating range (1-8m) match. Prepare a stable DC12-24V power supply and check the device for intact components.
- Mounting Operation: Install the emitter and receiver vertically on both sides of the industrial door frame, ensuring the light grid covers the full door opening without blind spots. Align the device's installation holes with the door frame, fix with matching screws. Route the 8m (transmitter) and 4m (receiver) cables along the door frame, avoiding sharp edges or high-pressure areas.
- Wiring & Debugging: Follow the Wiring Guide to connect power, ground, and signal cables - double-check to avoid positive/negative reversal or incorrect output terminal connections. Power on the device: Confirm the transmitter's steady blue light and receiver's steady blue light (normal power-on). Align the light grid: If the receiver's blue light flashes, adjust the emitter/receiver positions until the light stabilizes. Activate Blanking Mode as instructed and test the anti-pinch function to ensure normal operation.
- Cable Protection: Keep cables away from high-voltage conductors, door machinery, and forklift paths to avoid extrusion, damage, or interference.
- Lens Maintenance: Regularly wipe the emitter/receiver lenses with a dry, soft cloth to remove dust, oil stains, or condensation - dirty lenses will affect detection accuracy.
- Physical Protection: Do not bend, twist, or drop the device; avoid scratching the aluminum alloy housing or infrared lenses.
- Light Source Avoidance: Prevent direct sunlight or other infrared light sources from shining on the receiver to avoid false triggers.
- Blanking Mode Usage: Ensure the door or obstruction used for Blanking Mode meets the minimum continuous blocking distance requirement.
- Regular Inspection: Periodically test the anti-pinch and Blanking Mode functions; check wiring tightness and connector integrity to ensure long-term reliability.
-- Michael Chen, Warehouse Manager, Leading Cold Chain Logistics Provider
-- Lisa Wang, Safety Engineer, Global Automotive Manufacturer
-- David Li, Plant Director, International Pharmaceutical Corporation
-- Sarah Zhang, Safety Officer, Top E-commerce Fulfillment Center
For technical support, customization, or bulk inquiries, visit our official website: www.accesssecuritysolution.com

