SICK GTB6-P1231 1074135 Photoelectric Sensors
The GTB6-P1231 is a compact photoelectric proximity sensor, part number 1074135, intended for contactless detection of objects in automated equipment. It offers a sensing range from 5 mm to 250 mm, uses visible red PinPoint LED light, and provides a PNP switching output. The sensor is practical for machine installations that require a clearly visible light spot and reliable short-range presence detection.

| Brand | SICK |
| Product | Photoelectric Sensors |
| Model Number | GTB6-P1231 |
SICK GTB6-P1231 1074135 Photoelectric Sensors - Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression |
| Sensing range max. | 5 mm ... 400 mm |
| Sensing range | 50 mm ... 220 mm |
| Response time | < 1.25 ms |
| Switching frequency | 500 Hz |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Typ. light spot size (distance) | Ø 6 mm (100 mm) |
| Wave length | 625 nm |
| Digital output Type | PNP |
| Switching mode | Light/dark switching |
| Switching mode selector | Selectable via light/dark selector |
| Digital output output current IA | ≤ 100 mA |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | ± 10 % |
| Current consumption | 32 mA |
| Enclosure rating | IP67 |
| Protection class | III |
| Connection type | Cable, 3-wire, 2 m |
| Housing | Rectangular |
| Dimensions (W x H x D) | 12 mm x 31.5 mm x 21 mm |
| Housing material | Plastic, ABS/PC |
| Material Front screen | Plastic, PMMA |
| Cable Material | Plastic, PVC |
| Weight | 60 g |
| Ambient temperature, operation | –25 °C ... +55 °C |
| Ambient temperature, storage | –40 °C ... +70 °C |
The SICK GTB6-P1231, part number 1074135, is a photoelectric proximity sensor used to identify targets by evaluating light reflected directly from their surfaces. Its visible red PinPoint LED produces a concentrated sensing spot for straightforward alignment during installation. When sufficient reflected light is received, the integrated PNP switching output provides the object status to a compatible PLC or machine controller.
In industrial machinery, the GTB6-P1231 can perform presence checks for components at assembly stations, detect products travelling through packaging equipment, monitor objects at conveyor transfer locations, and verify parts before subsequent machine operations. Its short-range optical detection is useful where mechanical contact should be avoided, including material handling, manufacturing, sorting, and automated production processes.
Within the SICK G6 photoelectric sensor family, the GTB6-P1231 is constructed for repeated sensing cycles in factory environments. Its IP67 enclosure rating helps protect the internal electronics from dust and temporary water exposure, while the compact housing simplifies mounting in restricted equipment areas. The LED-based sensing system supports consistent object monitoring during continuous machine operation.