Many procurement teams check WLD4FP-213121A0ZZZ against Sick Laser Sensor, Sick Gtb6 P1211 and P&F Photoelectric Sensor before signing purchase orders, verifying quality, compliance, and after-sales support availability.
Sick WLD4FP-213121A0ZZZ Photoelectric Sensor
The Sick WLD4FP-213121A0ZZZ Photoelectric Sensor offers a Rectangular design, 635 nm sensing range, PinPoint LED light source, Push-pull: PNP/NPN output, and –40 °C ... +60 °C connection. Manufactured by Sick under the Sick Photoelectric Sensor category, this model belongs to the WL Series.
| Brand | Sick |
| Product Type | Photoelectric Sensor |
| Model Number | WLD4FP-213121A0ZZZ |
Sick WLD4FP-213121A0ZZZ Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric retro-reflective sensor |
| Functional principle detail | With minimum distance to reflector (dual lens system) |
| Sensing range max. | 4.5 m |
| Sensing range | - |
| Light source | PinPoint LED |
| Type of light | Visible red light |
| Light spot size (distance) | Ø 38 mm (1,000 mm) |
| Wave length | 635 nm |
| Adjustment | None |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | ≤ 5 Vpp |
| Current consumption | ≤ 20 mA, without load. At UB = 24 V |
| Protection class | III |
| Digital Output type | Push-pull: PNP/NPN |
| Switching mode | - |
| Output current Imax. | ≤ 100 mA |
| Response time | 150 µs |
| Switching frequency | 1,000 Hz 3) |
| Housing | Rectangular |
| Design detail | Flat |
| Dimensions (W x H x D) | 16 mm x 40.1 mm x 12.1 mm |
| Connection | Connector M8, 3-pin |
| Housing material | Plastic, VISTAL® |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66 (EN 60529), IP67 (EN 60529), IP69 (EN 60529) |
| Ambient operating temperature | –40 °C ... +60 °C |
| Ambient temperature, storage | –40 °C ... +75 °C |
| Weight | Approx. 30 g |
The WLD4FP-213121A0ZZZ Photoelectric Sensor by Sick features an advanced retro-reflective sensing system with a dual-lens design that enables detection with minimal distance to the reflector. Operating with a PinPoint LED and emitting visible red light at 635 nm, this sensor delivers a sharp Ø 38 mm light spot at 1,000 mm, making it highly effective in reliably identifying objects in tight or transparent conditions. The sensor has a rapid response time of just 150 µs and an impressive switching frequency of 1,000 Hz, which allows it to function flawlessly in fast-paced automation lines and high-speed sorting machines.
Built for long-term reliability, the sensor supports a push-pull output (PNP/NPN) configuration and operates on a 10–30 V DC supply with low current consumption of ≤ 20 mA (at 24 V, no load). It is housed in a slim, flat rectangular body made from VISTAL® plastic, with a front lens constructed from PMMA to enhance durability. Its enclosure carries IP66, IP67, and IP69 protection ratings, making it suitable for dusty, wet, and chemically cleaned environments. Measuring just 16 mm x 40.1 mm x 12.1 mm and equipped with a 3-pin M8 connector, it integrates easily into compact machines, panels, and robotic systems operating in demanding temperature ranges from –40 °C to +60 °C.
The Sick WLD4FP-213121A0ZZZ is purpose-built for environments where space, speed, and accuracy all matter. It’s widely used in automated pick-and-place machines, food and beverage packaging lines, and electronics assembly units that demand non-intrusive and fast detection. Its flat form factor allows engineers to mount it where traditional sensors can’t fit, while its dual-lens design ensures consistent detection regardless of reflector proximity. For junior engineers, it provides a plug-and-play sensing solution with no manual adjustment needed, and for senior plant technicians, it adds value by reducing false triggers and increasing process uptime. With Sick’s engineering quality and proven performance in the field, this Photoelectric Sensor delivers confidence in every cycle.
