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Safety Light Grid System for Automatic Doors with Waterproof Aluminum Housing
The JUTAI CL20-8L Safety Light Grid System is a professional protective solution tailored for automatic doors, featuring a waterproof aluminum housing and IP67 protection. It forms an 8-beam invisible light grid between the emitter and receiver, instantly triggering door reversal or stopping when personnel, objects, or equipment intrude—effectively preventing pinching, crushing, or collision accidents in industrial and commercial environments.
Core Specifications
Parameter
Specification
Model
CL20-8L
Product Type
Safety light grid system (safety light curtain)
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
Protection Rating
IP67 (dustproof + waterproof)
Housing Material
Aluminum alloy (waterproof, corrosion-resistant)
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
Automatic 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, misalignment)
Installation Hole Dimensions (Unit: mm)
14, 29, 75, 80, 175, 19.7, 21.4, 259
Key Advantages
Waterproof Aluminum Housing: Aluminum alloy construction ensures durability, corrosion resistance, and effective waterproofing, paired with IP67 rating. Withstands rain, dust, and moisture, suitable for outdoor-installed automatic doors or humid industrial environments.
Targeted Automatic Door Protection: 8-beam light grid covers full door opening height (1729mm), eliminating safety blind spots and preventing pinching of hands, limbs, or objects. Instant response to beam interruption, matching the operational speed of automatic doors to avoid safety lags.
Blanking Mode for False Alarm Prevention: Blocking the first channel does not trigger safety responses, adapting to automatic door gap structures. Avoids unnecessary door reversal during normal closure while retaining protection against unintended intrusions.
Easy Installation & Operation: Color-coded wiring simplifies connection to automatic door control systems. Adjustable mounting brackets fit various door frame structures; intuitive LED indicators enable quick status checks.
Wiring Guide
Component
Wire Color
Function
Notes
Transmitter
Red
DC12-24V Positive Power Supply
Connect to stable power supply; avoid overvoltage/undervoltage
Transmitter
Black
Ground (GND)
Connect to power negative terminal; ensure reliable grounding
Transmitter
Green/Yellow/White
Reserve
No connection required for basic use
Receiver
Red
DC12-24V Positive Power Supply
Same as transmitter power connection
Receiver
Black
Ground (GND)
Shared ground with transmitter
Receiver
Green
NO/NC Output (Default NO)
Connect to automatic door control system's safety signal input
Receiver
Yellow
Configurable NC
Activate via Blanking Mode setup
Receiver
White
COM (Common Terminal)
Matching terminal for NO/NC output
Critical Warning: Do NOT connect NO/NC terminals (Green/Yellow wires of receiver) to the power supply positive terminal—this will damage the optical relay.
Blanking Mode Activation Steps
Complete wiring and power on the system.
Within 1 minute of power-on, touch the receiver's Green wire to its GND (Black wire) five times.
Receiver's Red light blinks to confirm activation: Yellow wire switches to NC mode, Blanking Mode enabled.
Shenzhen Jutai COMM Co., Ltd. is a high-tech privately-owned enterprise that integrates production, research and development, and sales. Our company is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that int... Shenzhen Jutai COMM Co., Ltd. is a high-tech privately-owned enterprise that integrates production, research and development, and sales. Our company is dedicated to the research and development as well as system integration of security products, achieving an intelligent one unified platform that int...
