Proximity Photoelectric Sensor GTB6-P4212 SICK 250 mm PNP (with Stainless Steel Bracket)
Overview:
The GTB6-P4212 from SICK is a Background Suppression photoelectric proximity sensor from the G6 series of SICK. It features a maximum sensing distance of 250 mm, PNP output, 1,000 Hz switching frequency, and IP67 protection. The sensor comes with a pre-mounted stainless steel mounting bracket (BEF-W100-A), making it ideal for fast installation in packaging lines, automation systems, logistics, and robotics.
Product Overview of the Proximity Photoelectric Sensor GTB6-P4212
The GTB6-P4212 utilizes Background Suppression technology combined with a PinPoint red LED (650 nm) that produces a small, precise light spot (Ø 6 mm at 100 mm). This enables stable detection of small to medium-sized objects with minimal influence from object color, gloss, or background conditions.
With its ultra-compact design (12 × 31.5 × 21 mm), high-speed response, and mechanical spindle 5-turn for sensitivity adjustment, this model is particularly well-suited for demanding, high-reliability applications in industrial environments.
Key Features:
- Sensing distance: 35–140 mm (standard), up to 5–250 mm (max)
- Output: PNP, max output current ≤ 100 mA
- Supply voltage: 10–30 VDC, current consumption 30 mA (no load)
- Protection rating: IP67, suitable for dusty and humid environments
- Connection: M8 4-pin male connector
- Included: Stainless steel mounting bracket BEF-W100-A (1.4301/304)
Technical Specifications – GTB6-P4212
| Parameter |
Value |
| Model |
GTB6-P4212 |
| Part No. |
1052442 |
| Functional principle |
Photoelectric proximity sensor |
| Functional principle detail |
Background Suppression |
| Dimensions (W×H×D) |
12 × 31.5 × 21 mm |
| Sensing Distance (Max) |
5 mm – 250 mm (90% remission) |
| Sensing Distance (Standard) |
35 mm – 140 mm |
| Light Source |
Red light (PinPoint LED), 650 nm |
| Light Spot Size |
Ø 6 mm at 100 mm |
| Sensitivity Adjustment |
5-turn mechanical potentiometer |
| Supply Voltage (UB) |
10 – 30 VDC |
| Ripple |
± 10 % |
| Current Consumption |
30 mA (no load) |
| Output |
PNP |
| Switching Mode |
Light ON / Dark ON (selectable via rotary switch) |
| Output Current |
≤ 100 mA (≤ 50 mA when UB > 24 V) |
| Response Time |
< 625 µs |
| Switching Frequency |
1,000 Hz |
| Circuit Protection |
A, B, D |
| Connection |
M8, 4-pin male connector |
| Housing Material |
ABS/PC |
| Optics Material |
PMMA |
| Weight |
20 g |
| Protection Rating |
IP67 |
| Operating Temperature |
–25°C … +55°C |
| Storage Temperature |
–40°C … +70°C |
| Included Accessory |
Stainless steel mounting bracket (1.4301/304) BEF-W100-A |
| Certifications |
EU/UK/ACMA/Morocco CoC, China RoHS, cULus, DIN EN 62471 |
Source: SICK Official Datasheet GTB6-P4212. Download datasheet link
Applications of the GTB6-P4212 in Industry
- Packaging & Food Processing Lines: Reliable object detection on high-speed conveyors thanks to 1,000 Hz switching frequency and < 625 µs response time. Background Suppression eliminates interference from conveyor surfaces.
- Electronics & Semiconductor: The precise Ø 6 mm light spot enables accurate detection of small components on PCBs.
- Logistics & Material Handling: 250 mm sensing range and 5-turn potentiometer allow quick threshold adjustment when changing products.
- Industrial Robotics & Automation: Compact size and included bracket enable fast integration into robot end-effectors and automation cells.
- Food & Pharmaceutical Machinery: IP67 rating and chemical-resistant housing suitable for washdown environments; stainless steel bracket is corrosion-resistant and easy to clean.
Comparison: GTB6-P4212 vs GTB6-P4211
The GTB6-P4212 and GTB6-P4211 are both Background Suppression sensors from the G6 series with identical technical specifications. The only difference is that the GTB6-P4212 is supplied with a stainless steel mounting bracket BEF-W100-A (1.4301/304), making it ready for immediate installation.
| Parameter |
GTB6-P4212 |
GTB6-P4211 |
| Part No. |
1052442 |
1052438 |
| Operating Principle |
Background Suppression |
Background Suppression |
| Sensing Distance (Max) |
5 mm–250 mm (90% remission) |
5 mm–250 mm(90% remission) |
| Output |
PNP |
PNP |
| Switching Frequency |
1,000 Hz |
1,000 Hz |
| Connection |
M8, 4-pin |
M8, 4-pin |
| Protection Rating |
IP67 |
IP67 |
| Weight |
20 g |
20 g |
| Included Accessory |
Stainless steel mounting bracket (1.4301/304) BEF-W100-A |
No bracket |
| Recommended for |
Fast installation with full kit |
Custom mounting or bracket already available |
Conclusion:
- Choose the GTB6-P4212 when you need a complete ready-to-install solution.
- Choose the GTB6-P4211 when you already have a mounting bracket or require a custom mounting arrangement.
Frequently Asked Questions (FAQ)
Q1. Does the GTB6-P4212 use PNP or NPN output?
The GTB6-P4212 uses PNP transistor output, which is compatible with most European-standard industrial PLCs and 24 VDC control systems.
Q2. Does the GTB6-P4212 come with a mounting bracket?
Yes. The GTB6-P4212 is supplied with a stainless steel mounting bracket (BEF-W100-A) for quick and convenient installation.
Q3. What is the difference between GTB6-P4212 and GTB6-P4211?
Both models have identical technical specifications and performance. The GTB6-P4212 includes the stainless steel mounting bracket, while the GTB6-P4211 does not.
Q4. Can the GTB6-P4212 be used in dusty and humid environments?
Yes. The sensor has an IP67 protection rating, making it suitable for industrial environments with dust, moisture, or light water spray.
Q5. Can the GTB6-P4212 be replaced with an NPN sensor?
It is not recommended to directly replace it with an NPN model if the PLC input is configured for PNP logic, as the signal logic and wiring diagram will differ.
Contact for Purchasing the Proximity Photoelectric Sensor GTB6-P4212
AUMI – Official SICK Distributor in Vietnam. Full manufacturer warranty, complete CO/CQ documentation, and 24/7 technical support.
📞 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, Viet Hung Ward
- Ho Chi Minh City: 2nd Floor, HS Building, 260/11 Nguyen Thai Binh, Bay Hien Ward
- Da Nang: 9th Floor, PV Bank Building, No. 2 30-4 Street, Hoa Cuong Ward
