RGB Color Sensor, NPN/PNP, 7-13mm

Name: RGB Color Sensor, NPN/PNP, 7-13mm
Brand: Such.com
SKU: SUCH-CS-31N
Price: 465.32 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-CS-31N

$465.32

● Output mode: NPN/ PNP optional ● Spot size: 1 × 5mm (at 10mm distance) ● Detection range: 7-13mm ● Digital display: 4-digit red LED display

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Overview
Specs
Application
FAQ
Reviews

Overview

This RGB color sensor features a digital display, offering two-point and single-point teaching modes. It utilizes a composite red, green, and blue LED light source with a detection range of 7-13mm and a spot size of just 1×5mm. Supporting NPN/PNP outputs, it includes color mark mode and color mode with a response speed as fast as 45µs, ensuring stable detection on high-speed production lines.

Feature

RGB color sensor feature

RGB color sensor detection range: 7-13mm, response time: 45μs, spot size: 1x5mm (at 10mm distance).
Optimal LED Auto-Selection Function: Automatically selects the best color combination from RGB and LED options. Features built-in RGB tri-color light source modes and color mark modes.
Integrated 12-bit A/D converter enables high-precision detection with a resolution of 1/4,000.
The color sensor displays light intensity for both color marks and background colors via a 4-digit digital readout.

Dimension (unit: mm)

RGB color sensor dimension

Detail

RGB color sensor detail

Spot Size and Measuring Range

RGB color sensor spot sizes and measuring range

Wiring Guide

RGB color sensor wiring guide

Note: Output 2 is the inverted action of Output 1.

Wiring Diagram

NPN Output

RGB color sensor NPN output wiring diagram PNP Output

RGB color sensor PNP output wiring diagram

Specs

Model Selection

Signal Output	NPN	PNP
Output (1)	NPN open-collector transistor	PNP open-collector transistor
	Maximum input current 50mA	Maximum sink current 50mA
	Applied voltage ≤30VDC (between output and 0V)	Applied voltage ≤30VDC (between output and +VDC)
	Residual voltage ≤1.5V (input current 50mA)	Residual voltage ≤1.5V (input current 50mA)
Output Action (1)	Color-marking mode: ON when light is detected / ON when no light is detected (automatic teaching setting)
Output Action (1)	Color Mode: ON when matching / ON when mismatching
Short-Circuit Protection (1)	Equipment (Auto-Reset Type)
OUT (2)	NPN Open-Collector Transistor	PNP open-collector transistor
	Maximum Input Current 50mA	Maximum sink current 50mA
	Applied Voltage ≤30VDC (between output and 0V)	Applied voltage ≤30VDC (between output and +VDC)
	Residual Voltage ≤1.5V (input current 50mA)	Residual voltage ≤1.5V (input current 50mA)
Output Action (2)	Output (1) Inverted Operation
Short-Circuit Protection (2)	Equipment
Teach Input	Low (ON): 0~2VDC	High (ON): 5V~+VDC
	Output Current ≤0.5mA	Input current ≤3mA
	Input Impedance Approx. 10kΩ	Input resistance approx. 10kΩ
	High (OFF): 5V~+VDC Open	Low (OFF): 0~0.6VDC open

Universal Specs

Detection Distance	7-13mm
Spot Size	1 × 5mm (at 10mm distance)
Power Supply Voltage	12-24VDC
Response Time	Color mark mode: ≤45µs, Color mode: ≤150µs
Current Consumption	Normal mode: ≤750mW (≤30mA at 24V)
Current Consumption	ECO mode: ≤600mW (≤25mA at 24V)
Digital Display	4-digit red LED display
Sensitivity Setting Method	Color Mark Mode: 2-point teach
Sensitivity Setting Method	Fully automatic teach, Color Mode: 1-point teach
Sensitivity Fine-Tuning Function	Equipped with
Timer Function	Variable switch-on delay/switch-off delay timer, active/inactive toggle (timing range: 1~500ms, 9 adjustable steps)
Protective Construction	IP67 (IEC), waterproof
Operating Ambient Temperature	-10°C to +55°C (no condensation or freezing)
Storage Temperature	-20°C to +70°C
Operating Ambient Humidity	35~85%RH
Operating Ambient Illuminance	Incandescent lamp: Illuminance on light-receiving surface ≤3,000 lx
Withstand Voltage	AC1,000V for 1 minute between all power terminals and housing
Vibration Resistance	Frequency 10~500Hz, double amplitude 3.0mm or maximum acceleration 196m/s², 2 hours each in X/Y/Z directions
Impact Resistance	Acceleration 500 m/s² (approx. 50G), 3 times each in X/Y/Z directions
Illuminating Element	Red/Green/Blue composite LED (emission peak wavelengths: 640 nm / 525 nm / 470 nm)
Material	Housing: PBT
	Display Cover: Polycarbonate
	Operation Button: Silicone
	Lens: Glass lens
	Cover: Glass tube
Accessories	M4 Screws with washers (30mm long): 2
Connection Method	2m PVC lead wire
Weight	Net weight approx. 120g, packaged weight approx. 180g

Application

Assembly Lines

Packaging Machines

Tape Inspection

FAQ

Q1: How does the RGB color sensor work? ❯

The RGB color sensor illuminates the target surface with built-in red, green, and blue light sources. Internal photodiodes receive the reflected light and analyze its intensity ratios to determine the object's color. The sensor outputs either digital signals or analog values for processing by the master control system. Its core principle leverages the differing absorption and reflection characteristics of RGB light across various objects to identify colors, making it widely applicable in printing, packaging, labeling, and sorting industries.

Q2: In which industries can RGB color sensors be applied? ❯

RGB color sensors are extensively used in industrial and consumer electronics sectors. In industrial automation, they detect color marks on packaging, perform label recognition, and verify color consistency. In printing, they ensure color accuracy and prevent color deviation. Within food processing and sorting industries, they classify objects by color. Additionally, consumer electronics like smart home devices and educational robots frequently employ RGB color sensors for ambient light detection and color recognition.

Q3: What are the advantages of RGB color sensors? ❯

RGB color sensors offer fast response times, high detection accuracy, and strong anti-interference capabilities. They complete color recognition in minimal time, making them suitable for high-speed production lines. These sensors typically support multiple output formats, such as NPN/PNP or I²C, facilitating integration with systems like PLCs and microcontrollers. Compared to traditional photoelectric sensors, RGB color sensors not only detect object presence but also accurately identify specific colors, significantly enhancing the reliability of automated inspection and control.

1 review(s)

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From: Stephen Palmerton | Date: 7/31/2026 9:38 AM

rgb color sensor works well for inspection

I added this sensor to a small packaging inspection machine and it has been doing a good job. The rgb color sensor detects color marks quickly and the teaching function makes setup easier. I spent some time adjusting the sensitivity for different materials, but after that the readings stayed consistent. A useful sensor for simple color detection tasks on production lines.

RGB Color Sensor, NPN/PNP, 7-13mm

Feature

Dimension (unit: mm)

Detail

Spot Size and Measuring Range

Wiring Guide

Wiring Diagram

Assembly Lines

Packaging Machines

Tape Inspection

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