Through-Beam Photoelectric Sensor GSE2S-E1321S03 SICK – 3 m NPN
Summary: The GSE2S-E1321S03 is a through-beam photoelectric sensor from SICK’s G2 series, with a 3 m sensing range, NPN output, 2 m cable, and IP67 protection rating. It is a popular choice for automated factories requiring reliable object detection at longer distances in industrial environments. Available as a genuine product from AUMI.
The GSE2S-E1321S03 is a through-beam photoelectric sensor developed by SICK (Germany). It uses an 850 nm infrared light beam to detect objects. The system consists of separate sender and receiver units installed opposite each other. It detects objects when the light beam is interrupted. Its compact design (7.7 × 21.8 × 13.5 mm) allows easy integration into space-constrained applications in Vietnamese factories.
Key Features:
- Sensing range: 0 – 2 m (standard), up to 3 m maximum
- Output: NPN, Dark switching
- Protection rating: IP67 – fully dustproof, withstands 1 m water immersion
- Operating temperature: –25 °C to +50 °C
- Connection: 3-wire cable, 2 m length, PVC jacket
Technical Specifications – GSE2S-E1321S03 Photoelectric Sensor
| Parameter |
Value |
| Part no. |
1092425 |
| Operating principle |
Through-beam |
| Dimensions (W × H × D) |
7.7 mm × 21.8 mm × 13.5 mm |
| Standard sensing range |
0 m – 2 m |
| Maximum sensing range |
0 m – 3 m |
| Light source |
Infrared LED, 850 nm |
| Light spot size |
Ø 145 mm (at 1,500 mm distance) |
| Supply voltage |
10 V DC – 30 V DC |
| Current consumption |
20 mA (no load) |
| Switching output |
NPN |
| Switching mode |
Dark switching |
| Maximum output current |
≤ 50 mA |
| Response time |
< 0.6 ms |
| Switching frequency |
800 Hz |
| Connection |
3-wire cable, 2 m, PVC, Ø 3 mm |
| Protection circuits |
Reverse polarity, short-circuit, interference protection |
| Housing material |
ABS plastic |
| Optical material |
PMMA |
| Protection rating |
IP67 |
| Operating temperature |
–25 °C to +50 °C |
| Storage temperature |
–40 °C to +75 °C |
| Weight |
72.2 g |
| Certifications |
CE, cULus, UK, ACMA, China RoHS, Morocco, DIN EN 62471 |
| Ripple |
< 5 Vpp |
Note: Black wire on sender is cut – only brown (power) and blue (ground) wires remain. Specifications based on official SICK datasheet 2026.
Download datasheet: https://www.sick.com/media/pdf/4/44/644/dataSheet_GSE2S-E1321S03_1092425_en.pdf
Industrial Applications of GSE2S-E1321S03 Through-Beam Photoelectric Sensor
With a 3 m sensing range and IP67 rating, the GSE2S-E1321S03 is suitable for demanding industrial applications requiring high reliability:
Packaging Lines and Conveyor Systems: Reliable detection of products on high-speed conveyors. The 800 Hz switching frequency ensures no missing small objects. Flexible installation distance up to 2 m is ideal for wide conveyor belts.
Automatic Doors/Gates and Access Control: Maximum 3 m range allows installation across wide doorways or corridors. IP67 rating ensures stable operation in outdoor or wet environments.
Food and Pharmaceutical Packaging Machines: Compact 7.7 mm width enables installation in tight spaces. Through-beam principle works well with cartons, bottles, and transparent objects when properly aligned.
Product Sorting and Counting Systems: NPN Dark switching is compatible with standard PLCs. Can be used with PLC counters for accurate product counting in logistics and warehousing.
Electronics and Semiconductor Manufacturing: Response time < 0.6 ms meets high-speed detection requirements for SMT lines. Wide 10–30 V DC supply voltage ensures compatibility with most control cabinets.
Comparison within G2 Series
| Criteria |
GSE2S-E1321S03 |
GSE2S-E1311 |
GSE2S-P1321S01 |
| Output |
NPN |
NPN |
PNP |
| Max. Sensing Range |
3 m |
2 m |
3 m |
| Connection |
2 m cable |
2 m cable |
2 m cable |
| Switching Mode |
Dark |
Dark |
Dark |
| Recommended for |
NPN PLC, 3 m range |
NPN PLC, shorter range |
PNP PLC, 3 m range |
Note: Choose GSE2S-E1321S03 if your PLC uses NPN (sinking) inputs and requires up to 3 m range. For PNP (sourcing) PLCs, select GSE2S-P1321S01.
Purchase Genuine GSE2S-E1321S03 SICK Sensor at AUMI
You can purchase the genuine SICK GSE2S-E1321S03 through-beam photoelectric sensor at AUMI – the official authorized distributor of SICK in Vietnam, with competitive pricing, full manufacturer warranty, and 24/7 technical support.
- 100% genuine SICK product with original labels, full CO/CQ documentation, and traceability
- Official manufacturer warranty with technical support for installation and model selection
- Nationwide delivery, warehouses in Hanoi and Ho Chi Minh City, same-day delivery available
Frequently Asked Questions (FAQ)
Q1: What is the price of the GSE2S-E1321S03 SICK 3 m NPN through-beam sensor? Price depends on quantity and timing. Please contact AUMI at 0917 991 589 (Hanoi) or 0932 226 100 (Ho Chi Minh City) for the best quotation and application-specific advice.
Q2: Which industries use the GSE2S-E1321S03 sensor? It is widely used in food & pharmaceutical packaging lines, logistics and warehouse conveyor systems, electronics manufacturing, automatic gates, and product sorting lines.
Q3: Is the GSE2S-E1321S03 waterproof? Yes. The sensor has IP67 protection – fully dust-tight and can withstand immersion in 1 m of water for 30 minutes. Suitable for wet production environments and cleaning areas.
Q4: Does the GSE2S-E1321S03 come with warranty? Yes. When purchased from AUMI, the official SICK distributor, the product comes with full manufacturer warranty and complete CO/CQ documentation.
Q5: What is the difference between GSE2S-E1321S03 and GSE2S-P1321S01? The GSE2S-E1321S03 has NPN output (for sinking PLC inputs), while the GSE2S-P1321S01 has PNP output (for sourcing PLC inputs). Both models offer a 3 m sensing range and 2 m cable.
Contact for Purchase AUMI – Official SICK Distributor in Vietnam
Hotline: 0917 991 589 (Hanoi) | 0932 226 100 (Ho Chi Minh City)
Email: [email protected]
Website: https://aumi.com.vn/
Addresses:
- Hanoi: B44, Villa Area, Viet Hung Urban Area, Long Bien District
- Ho Chi Minh City: 2nd Floor, HS Building, 260/11 Nguyen Thai Binh, Tan Binh District
- Da Nang: 9th Floor, PV Bank Building, 2 Road 30-4, Hoa Cuong Ward
🔗 Official Datasheet
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