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PF21b Background Suppression Diffuse Photocell, Photo Eye Sensor for PCB Detection
US$10.00-15.001 Piece
PF21b Background Suppression Diffuse Photocell, Photo Eye Sensor for PCB Detection
US$15.00
1-99 Pieces
US$14.00
100-199 Pieces
US$13.00
200-999 Pieces
US$10.00
1,000+ Pieces
Sample price:US$16.00/piece.Request sample
Product profile
Type
Diffuse Reflection Type Photoelectric SensorOutput Signal Type
Switching TypeProduction Process
IntegrationModel NO.
PF21BMaterial
PlasticFeature
Anti-Light InterferenceIP Rating
IP67Certification
CECustomized
CustomizedAdjadjustment Distance
350mmOutput Mode
NPN/PNP Open CollectorLight Source
940nm Visible Red LightSupply Voltage
10-30VDCApplication
Logistics,Conveyor BeltAction Mode
Select Product Light-on/Dark-on by ModelIndicator Light
Power Green Indicator, Output Yellow IndicatorResponse Time
20msTransport Package
Standard Carton BoxSpecification
21mmx11mmx31mmTrademark
G-TEKOrigin
TianjinHS Code
9032900090Production Capacity
5000/MonthKey features
Background Suppression: Diffuse reflection type with background suppression function for accurate PCB detection.
Anti-Light Interference: Non-sphere optical lens eliminates stray light with strong light resistance.
IP67 Waterproof Rating: High protection rating with integrally formed wiring outlet for better sealing.
Multiple Output Modes: NPN/PNP open collector output with Light-on/Dark-on selectable by model.
Comprehensive Protection: Built-in reverse polarity, over-voltage, and short-circuit protection circuits.
Customizable Options: Supports customization for adjustment distance, output mode, and light source.
CE Certified Quality: Quality affirmed by CE certificate and 23 years of industry experience.
Fast Response Time: Response time as fast as 20ms for efficient conveyor belt applications.
Company profile

Years of Export ExperiencePatents AwardedManagement CertificationProduct Certification
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤1.96h CertifiedTerms of Payment: T/T, LC, D/P, etc.
AI-Powered supplier vetting
SummaryG-TEK is an industrial equipment and instrumentation supplier with stated sales of up to 800,000 pieces or sets in 2019 across proximity switches, photoelectric sensors, light curtains, and laser radar. It offers broad customization, reported new products within the past year, and has documented procedures for finished-product inspection, supplier assessment, corrective actions, and complaint handling. Its certifications include ISO9001:2015, ISO45001:2018, ISO14001, and CE capability. The supplier has three production lines, but does not continuously reconcile production quantities for every batch or bulk run. Export experience is established, with 10 years of exporting and three experienced export staff, although overseas operational infrastructure is limited: no overseas warehouse, showroom, agent, or branch is reported. Financial information is only represented by year labels, without substantive performance evidence. No SDK or ODM service is available, and no OEM service for popular brands is reported.
Supplier typeThe stated business scope covers on-board equipment, instruments and meters, intelligent instruments, industrial automatic control systems, and intelligent vehicle-mounted devices. The company description also identifies product sales including proximity switches, photoelectric sensors, light curtains, and laser radar, supporting classification as an industrial equipment and automation-related supplier.
CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, together with CE product certification capability. These are explicit certification holdings or capabilities relevant to quality, occupational safety, environmental management, and product compliance.
After-Sales capabilityThe supplier has documented and followed procedures for corrective and preventive actions and effective customer complaint handling. However, it reports no overseas warehouse, showroom, agent, or branch; this indicates established complaint-process capability but limited overseas service infrastructure.
R&D capabilityThe supplier reports that it introduced new products during the past year and emphasizes continuous technological innovation. It also supports extensive product customization, but has no available SDK and does not provide ODM services; overall innovation activity is evidenced, while platform-development and ODM capability are limited.
Production capacityThe company reported sales of up to 800,000 pieces or sets in 2019 and operates three production lines. It has standardized finished-product inspection instructions that are uniformly followed, but does not continuously reconcile quantities for every batch or bulk production run, creating a stated production-control weakness.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same broad capability is reported in two slices, providing strong direct evidence of extensive customization support.
Product Q&A
Q:What is the sensing range of the PF21B sensor?
A:
The sensing range varies by model: PF21B-150A is 2~150mm, PF21B-350A is 5~350mm, and PF21B-900A is 5~900mm.
Q:What is the operating voltage and output type?
A:
The operating voltage is 10~30VDC. The output is transistor type, available in NPN or PNP open collector modes.
Q:Is the product customizable?
A:
Yes, we provide customized products, but customization requires meeting a certain quantity threshold.
Q:What is the warranty period for the sensor?
A:
Sensor products are guaranteed for 15 months. Light curtain and lidar products are guaranteed for 18 months.
Q:What is the minimum order quantity (MOQ)?
A:
We offer MOQ per piece, which depends on your specific order requirements.
Send Inquiry
*To:
TIANJIN G-TEK SENSOR TECHNOLOGY CO., LTD
TIANJIN G-TEK SENSOR TECHNOLOGY CO., LTD*Content:
0/4000
Supplier replies will be sent to your registered email
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