Sick WLL260-F440 Fiber Optic Sensor
Sick WLL260-F440 Fiber Optic Sensor provides visible red LED detection with PNP output and short-range proximity sensing capability industrial. This Sick Fiber Optic Sensor supports 0–50 mm proximity sensing and up to 700 mm through-beam sensing, delivers ≤ 0.7 ms response time, operates at 700 Hz switching frequency, and connects via an M12 4-pin connector within a rectangular ABS housing.

| Brand | Sick |
| Product Type | Fiber Optic Sensor |
| Model Number | WLL260-F440 |
Sick WLL260-F440 Fiber Optic Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Device type | Fiber-optic sensors |
| Dimensions (W x H x D) | 25 mm x 77.8 mm x 63 mm |
| Housing design (light emission) | Rectangular |
| Sensing range max. | 0 mm ... 65 mm (Proximity system) 1) 2)0 mm ... 110 mm (Proximity system) 1) 3)0 mm ... 800 mm (Through-beam system) 2) |
| Sensing range | 0 mm ... 50 mm, Proximity system 2)0 mm ... 90 mm, Proximity system 3)0 mm ... 700 mm, Through-beam system 2) |
| Type of light | Visible red light |
| Light source | LED |
| Wave length | N/A |
| Indication | LED |
| Supply voltage | N/A |
| Current consumption | 35 mA 3) |
| Switching output | PNP |
| Switching mode | Light/dark switching |
| Response time | ≤ 0.7 ms |
| Switching frequency | 700 Hz |
| Connection type | Male connector M12, 4-pin |
| Housing material | Plastic, ABS |
| Ambient operating temperature | –25 °C ... +55 °C |
| Ambient temperature, storage | –40 °C ... +70 °C |
| Weight | 120 g |
The Sick WLL260-F440 Fiber Optic Sensor is a rectangular optical sensing device designed for controlled short-range object detection in industrial automation systems. This Sick Fiber Optic Sensor uses visible red LED light, provides a PNP switching output, and supports defined proximity and through-beam sensing ranges. The WLL260-F440 is applied in automation environments where stable optical detection and predictable output behavior are required.
In industrial automation applications, the Sick WLL260-F440 Fiber Optic Sensor is used in conveyors, packaging machines, assembly stations, and inspection processes. Its ≤ 0.7 ms response time supports timely object detection, while the stable PNP output ensures consistent signal behavior. The robust ABS housing and M12 connector support installation in fixed industrial machinery.
The Sick WLL260-F440 Fiber Optic Sensor delivers consistent sensing performance through defined sensing ranges, controlled switching frequency, and stable optical output. With durable plastic housing, controlled current consumption, and reliable detection characteristics, this Sick WLL260-F440 model is suitable for continuous industrial operation. It meets standard industrial automation requirements for dependable fiber optic sensing.




