Sick GTB6-F7421V Photoelectric Sensor
The Sick GTB6-F7421V photoelectric sensor uses infrared background suppression with 200 mm sensing range and PNP output capability installed. This Sick IR Photoelectric Sensor operates with infrared LED light at 850 nm wavelength, supports 500 Hz switching frequency, and works on 10–30 V DC supply. It is manufactured by Sick, categorized under Sick Photoelectric Sensors, and belongs to the G6 Series for industrial automation.
| Brand | Sick |
| Product Type | Photoelectric Sensors |
| Model Number | GTB6-F7421V |
Sick GTB6-F7421V Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Sensing range max. | 5 mm ... 420 mm |
| Sensing range | 50 mm ... 200 mm |
| Light source | LED |
| Type of light | Infrared light |
| Light spot size (distance) | Ø 8 mm (100 mm) |
| Wave length | 850 nm |
| Adjustment | Mechanical spindle, 5 turns |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | ± 10 % |
| Current consumption | 30 mA 3) |
| Protection class | III |
| Digital Output type | PNP |
| Switching mode | Light/dark switching |
| Switching mode selector | - |
| Signal voltage PNP HIGH/LOW | VS - (≤ 3 V) / approx. 0 V |
| Output current Imax. | ≤ 100 mA 4) |
| Response time | < 1.25 ms 5) |
| Switching frequency | 500 Hz 6) |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15 mm x 44 mm x 22 mm |
| Connection | Cable with M12 male connector, 4-pin |
| Housing material | Stainless steel, Stainless steel V4A (1.4404, 316L) |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP67, IP69K |
| Ambient operating temperature | –25 °C ... +55 °C |
| Ambient temperature, storage | –30 °C ... +75 °C |
| Weight | 40 g |
The GTB6-F7421V Sick IR Photoelectric Sensor is a photoelectric proximity sensor designed for controlled short-range detection. The GTB6-F7421V combines background suppression sensing, 200 mm operating range, PNP digital output, and a 500 Hz switching frequency. This model is part of the Sick G6 series and is used in industrial automation systems requiring precise object discrimination.
The GTB6-F7421V Sick IR Photoelectric Sensor is commonly applied in conveyors, packaging equipment, automated assembly lines, and inspection stations. Infrared sensing supports stable detection of objects with varying surface characteristics. Its stainless steel housing and compact rectangular design allow installation in demanding machine environments with exposure to washdown or contaminants.
The Sick GTB6-F7421V Photoelectric Sensor provides consistent electrical performance and mechanical durability for industrial applications. With IP67 and IP69K enclosure ratings, it is suitable for harsh operating conditions. As a G6 series device, the GTB6-F7421V aligns with Sick photoelectric sensor standards, supporting reliable long-term operation in automation systems.

