SICK GTB2S-N5331 Photoelectric Proximity Sensor 36mm NPN – G2 Miniature Series
- The GTB2S-N5331 is a photoelectric proximity sensor from SICK, utilizing Background Suppression (BGS) technology for accurate object detection in confined installation spaces.
- The sensor features a sensing range of 1–36 mm, making it suitable for applications requiring longer detection distances while maintaining a compact form factor.
- Its NPN output, Light ON switching mode, and 800 Hz switching frequency ensure stable performance on high-speed production lines.
- The IP67 protection rating enables reliable operation in harsh industrial environments with dust and high humidity.
- The red PinPoint LED light source provides dependable detection of low-reflective or dark-colored objects.
- The GTB2S-N5331 is suitable for a wide range of applications, including conveyor and logistics systems, automotive assembly, food packaging, electronics manufacturing, and automated warehouse systems.
- Compared with the GTB2S-N5311, the GTB2S-N5331 offers twice the sensing distance while maintaining the same compact housing dimensions.
The GTB2S-N5331 is an NPN photoelectric proximity sensor from SICK’s ultra-compact G2 series, featuring a maximum detection range of 36 mm and IP67 protection. Ideal for automation applications requiring a longer sensing distance in space-constrained installations.
Overview of GTB2S-N5331 Photoelectric Proximity Sensor
The GTB2S-N5331 is the extended-range variant in SICK’s G2 series, offering a maximum detection distance of 36 mm within the same miniature housing as the GTB2S-N5311. This allows engineers to select the appropriate sensing distance without redesigning mechanical mounting structures.
The BGS principle ensures the sensor detects only objects within the set range, unaffected by background surfaces. The PinPoint LED (640 nm) reliably detects dark objects (6% reflectance) at distances of 5–30 mm.
5 key specifications:
- Detection range: 1–36 mm (90% white reflectance target)
- Output: NPN, Light Switching mode
- Protection rating: IP67 – dust-tight and water-immersion resistant
- Supply voltage: 10–30 VDC (12 VDC / 24 VDC nominal)
- Connection: 0.2 m cable with 3-pin M8 connector
GTB2S-N5331 SICK Technical Specifications
| Parameter |
Value |
| Model |
GTB2S-N5331 |
| Part No. |
1064355 |
| Product Series |
G2 – Miniature Photoelectric Sensor |
| Operating Principle |
Photoelectric proximity sensor, Background Suppression (BGS) |
| Housing Dimensions (W × H × D) |
7.7 mm × 21.8 mm × 13.5 mm |
| Max. Sensing Range |
1 mm – 36 mm (90% reflectance target) |
| Sensing Range (18% reflectance) |
5 mm – 28 mm |
| Sensing Range (6% reflectance) |
5 mm – 30 mm |
| Background Suppression from |
≥ 38 mm |
| Light Source |
PinPoint LED, red, 640 nm wavelength |
| Output Type |
NPN |
| Switching Mode |
Light Switching |
| Max. Output Current |
50 mA |
| Supply Voltage |
10–30 VDC (12 V / 24 V nominal) |
| Switching Frequency |
800 Hz |
| Response Time |
< 0.6 ms |
| MTTFD |
3,378 years |
| Protection Rating |
IP67 |
| Housing Material |
ABS (plastic) |
| Operating Temperature |
-25°C to +50°C |
| Connection |
0.2 m cable, 3-pin M8 connector |
| Approvals |
EU DoC, UK DoC, ACMA DoC, Morocco DoC, China RoHS, cULus, DIN EN 62471 |
Technical data from SICK AG official datasheet.
GTB2S-N5331 Applications in Industry
With an extended detection range of 36 mm in the same miniature housing, the GTB2S-N5331 addresses applications requiring greater sensing distance:
- High-Speed Conveyor Object Detection: The 36 mm range allows sensor mounting at a safer distance from larger objects on the line. The 800 Hz switching frequency ensures no products are missed even at high conveyor speeds.
- Automotive Assembly Part Presence Verification: Detects presence/absence of bolts, washers, and plastic clips in fixtures and carriers. BGS prevents false triggers from metallic or plastic backgrounds.
- Filling & Packaging Machines: Verifies bottle caps, labels, and product levels inside packaging. The 36 mm range allows the sensor to be mounted outside a protective guard while still accurately detecting the product within.
- Electronics Manufacturing Lines: Detects PCBs, component trays, and robot pallets. The PinPoint LED source resolves objects at 5–30 mm with high accuracy, even for dark-colored materials.
- Automated Storage & Retrieval Systems (AS/RS): Confirms pallet and tray positions on automated racks. IP67 rating ensures reliable operation in cold-storage warehouses or high-humidity environments.
GTB2S-N5331 Comparison with Other G2 Models
| Criterion |
GTB2S-P5331 (PNP) |
GTB2S-N5311 (NPN) |
GTB2S-N5331 (NPN) |
| Max. Detection Range |
36 mm |
18 mm |
36 mm |
| Output Type |
PNP |
NPN |
NPN |
| Connection |
M8 (0.2 m) |
M8 (0.2 m) |
M8 (0.2 m) |
| IP Rating |
IP67 |
IP67 |
IP67 |
| Suitable PLC Input |
PNP (source) |
NPN (sink) |
NPN (sink) |
Note: Select NPN (GTB2S-N5331) if your PLC/controller uses NPN (sink) inputs. Select PNP (GTB2S-P5331) for PNP (source) input systems.
Frequently Asked Questions – GTB2S-N5331 SICK (FAQ)
Q1: What is the price of the SICK GTB2S-N5331 photoelectric sensor?
A: Pricing depends on quantity and order timing. Contact AUMI at +84 917 991 589 (Hanoi) or +84 932 226 100 (Ho Chi Minh City) for the best quote and free technical consultation.
Q2: Where to buy genuine SICK GTB2S-N5331 in Vietnam?
A: AUMI is the authorized SICK distributor in Vietnam, guaranteeing 100% genuine products with complete CO/CQ. Contact us by hotline or visit aumi.com.vn for ordering and technical advice.
Q3: What industries use the GTB2S-N5331?
A: The GTB2S-N5331 is well suited for electronics manufacturing, automotive assembly, food and pharmaceutical packaging, automated warehousing (AS/RS), and any application requiring 1–36 mm object detection in compact installations.
Q4: Is the GTB2S-N5331 waterproof?
A: Yes. The GTB2S-N5331 is rated IP67—fully dust-tight and able to withstand temporary water immersion. This product is suitable for dusty and humid industrial environments.
Q5: How does GTB2S-N5331 differ from GTB2S-N5311?
A: The GTB2S-N5331 provides twice the detection range of the GTB2S-N5311 (36 mm vs. 18 mm). Both sensors share the same G2 housing size, NPN output, IP67 rating, and M8 connection. Choose the N5331 when your application requires sensing beyond 18 mm or when the sensor must be mounted further from the target.
AUMI – Authorized SICK Distributor in Vietnam. Genuine products, full CO/CQ, 24/7 technical support.
📞 Hotline: 0917 991 589 (Hanoi) | 0932 226 100 (Ho Chi Minh City)
📧 Email: [email protected]
🌐 Website: https://aumi.com.vn/
📍 Offices:
- Hanoi: B44, Garden Lot, Viet Hung Urban Area, Long Bien
- Ho Chi Minh City: Floor 2, HS Building, 260/11 Nguyen Thai Binh, Tan Binh District
- Da Nang: Floor 9, PV Bank Building, No. 2 30-4 Street, Hoa Cuong Ward
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