Industrial Door Safety Light Curtain with 8 Beam Cross Detection, 12m Range, and

The JUTAI CG15-8L12 is a streamlined industrial entrance beam safety detector designed for high-velocity doors, garage doors, cold storage doors, sectional doors, roller shutters and loading dock doors.

It uses an 8-beam infrared detection system combined with cross-detection technology to form a wider protective grid across the doorway. When a vehicle, forklift, pedestrian or other obstacle interrupts the infrared grid, the receiver immediately changes the relay output status and sends a safety signal to the door controller.

The CG15-8L12 is especially suitable for projects requiring a streamlined Grid Mini-style safety sensor. It provides an alternative solution for industrial entrance manufacturers and system integrators looking for a slim-profile, long-distance and weather-resistant door protection sensor.

Unlike a basic parallel-beam photocell system, the CG15-8L12 combines horizontal and crossing infrared beams to create a denser protective detection grid.

This design helps reduce blind areas between individual optical points and improves obstacle detection across the industrial entrance opening.

The transmitter and receiver support a maximum detection distance of up to 12 meters, making the sensor suitable for wide industrial entrances, warehouse entrances and large loading dock openings.

The slim aluminum housing can be installed inside the door rail or externally on the door frame. Its streamlined structure is suitable for applications where installation space is limited.

The sensor supports two operating modes:

Normal Mode:
Any interrupted infrared beam immediately changes the safety output.

Concealing Mode:
Fixed obstructions caused by the door rail or door structure can be concealed during setup, allowing the remaining detection area to continue operating normally.

This function is especially useful when the light curtain is installed inside an industrial entrance guide rail.

The IP67-rated housing helps protect the internal optical and electronic components against dust, moisture and water exposure.

It is suitable for industrial entrances, humid warehouses, cold storage entrances and outdoor access applications.

The slim aluminium casing profile provides mechanical strength, corrosion resistance and long-term stability in demanding industrial environments.

The receiver provides NO, NC and COM relay contacts, allowing easy connection with:

• High-velocity door controllers
• Garage door controllers
• Roller shutter controllers
• PLC systems
• Access control equipment
• Safety relay circuits

The beam safety detector consists of one infrared transmitter and one receiver installed on opposite sides of the door opening.

The transmitter emits multiple infrared beams toward the receiver. Cross-detection technology creates additional diagonal detection paths between the optical points, forming a grid-style protective area.

When all beams are received correctly, the relay remains in its normal operating state.

When a forklift, vehicle, pedestrian or object interrupts the detection grid, the receiver changes the relay output and sends a signal to the industrial entrance controller. The controller can then stop, reopen or prevent the door from closing, depending on the programmed door logic.

In Normal Mode, interruption of any active infrared beam generates an output signal.

This mode is recommended for external door-frame installation and applications where the complete sensing area must remain active.

Typical applications include:

• High-speed PVC doors
• Garage doors
• Sectional overhead doors
• Roller shutter doors
• Warehouse entrances
• Loading dock doors

Blanking Mode is designed for: When the light curtain is installed inside the door guide rail, the situation where the door body descends and blocks infrared rays from top to bottom is considered normal mode and does not trigger the relay; When an object blocks infrared radiation other than that blocked by the door, the safety anti smashing function is triggered to open the door

Detects forklifts, vehicles, pedestrians and goods before or during door closing, helping the door controller stop or reopen the door.

Provides additional doorway safety detection for residential, commercial and underground garage door systems.

The IP67 aluminum housing is suitable for humid, cold and condensation-prone environments commonly found around refrigerated warehouses.

Provides a protective infrared detection grid around logistics loading areas and warehouse docking entrances.

Can be installed along the door frame or guide rail to monitor the closing area of overhead sectional doors.

Provides obstacle detection for industrial and commercial roller shutter door systems.

• Streamlined Grid Mini-style industrial entrance sensor
• 8-beam cross-detection infrared grid
• Up to 12m long-distance detection
• 1500mm slim aluminum profile
• Normal and Concealing operating modes
• Suitable for internal rail or external frame mounting
• IP67 dustproof and waterproof construction
• NO, NC and COM relay output
• Fast 30ms detection response
• Suitable for vehicles, forklifts and pedestrian detection
• Easy integration with industrial entrance controllers
• OEM and ODM customization available

The CG15-8L12 is designed for industrial entrance projects that normally use streamlined grid-style or mini beam safety detector sensors.

Its slim profile, overlapping beam detection, concealing function and relay output make it suitable for replacement projects, new door production and customized industrial entrance safety systems.

Compatibility with an existing controller, cable definition, output logic and installation dimensions should be confirmed before replacing another brand or model.

Install the transmitter and receiver vertically on opposite sides of the door opening.

Make sure that:

• Both profiles are installed at the same height.
• The optical surfaces face each other.
• The profiles are parallel and not twisted.
• The installation surface is rigid and vibration-resistant.
• Power and signal cables are separated from motor and inverter cables.
• The relay output logic is confirmed before connecting to the door controller.
• Concealing Mode is configured only after the sensor is correctly aligned.
• The complete detection area is tested before the door is placed into service.

• 1 × Infrared Transmitter
• 1 × Infrared Receiver
• Connection Cables
• Mounting Accessories
• Installation Instructions