Leuze GS04B/P.1-40-M8.3 Fork Sensor
The Leuze GS04B/P.1-40-M8.3 fork sensor detects 0.3 mm objects using red LED light across a 40 mm opening. This Leuze Fork Sensor operates on 10–30 V DC, delivers a PNP transistor digital output, and supports a 5,000 Hz switching frequency through an M8 3-pin connector. It belongs to the GS Series and includes 100 µm switching hysteresis, 0.1 ms response time, and IP67 protection.
| Brand | Leuze |
| Product Type | Fork Sensors |
| Product | GS04B/P.1-40-M8.3 |
Leuze GS04B/P.1-40-M8.3 Fork Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Series | 04B |
| Application | Detection of small parts |
| MTTF | 700.42 years |
| Light source | LED, Red |
| Wavelength | 660 nm |
| Laser class | - |
| Transmitted-signal shape | Pulsed |
| Minimum object diameter | 0.3 mm |
| Power Supply | 10 ... 30 V, DC |
| Open-circuit current | 0 ... 30 mA |
| Switching hysteresis | 100 µm |
| Number of digital switching outputs | 1 Piece(s) |
| Output Type | Digital switching output |
| Switching current, max. | 100 mA |
| Switching voltage | high: ≥(UB-2V) low: ≤ 2 V |
| Switching element | Transistor, PNP |
| Switching principle | Light/dark switchable |
| Switching frequency | 5,000 Hz |
| Response time | 0.1 ms |
| Number of connections | 1 Piece(s) |
| Connection Function | Signal OUT Voltage supply |
| Type of Connection | M8 Connector, 3 -pin |
| Design | Fork |
| Mouth width | 40 mm |
| Mouth depth | 45 mm |
| Dimension (W x H x L) | 10 mm x 60 mm x 70 mm |
| Housing material | Metal; Diecast zinc |
| Lens cover material | Glass |
| Housing color | Black, RAL 9005 |
| Type of fastening | Through-hole mounting |
| Number of LEDs | 1 Piece(s) |
| Ambient temperature | -25 ... 60 °C |
| Degree of protection | IP 67 |
| Net weight | 84 g |
The GS04B/P.1-40-M8.3 Leuze 40mm Mouth Width Fork Sensor is a GS Series photoelectric sensor designed for industrial automation environments. The GS04B/P.1-40-M8.3 uses 660 nm red LED light, supports 0.3 mm minimum object detection, and provides a PNP transistor switching output for standard control circuits.
The GS04B/P.1-40-M8.3 Leuze 40mm Mouth Width Fork Sensor is commonly used in conveyors, packaging equipment, automated assembly lines, and part detection systems. Its 40 mm fork opening enables consistent sensing in fixed mechanical gaps, while the 5,000 Hz switching frequency ensures reliable detection during continuous motion.
The GS04B/P.1-40-M8.3 Fork Sensor from Leuze is built for stable industrial operation with sealed construction and defined switching behavior. With IP67 environmental protection, metal housing, and controlled hysteresis, it maintains dependable performance. As part of the GS Series, this model reflects Leuze standards for fork photoelectric sensors.

