Sick WTM12L-24161120A00 Photoelectric Sensor
The Sick WTM12L-24161120A00 is a laser photoelectric proximity sensor with multimode background suppression and 850 mm sensing range maximum. This Sick photoelectric sensor uses visible red laser light at 655 nm, operates on 10–30 V DC, supports push-pull PNP/NPN output, and belongs to the W12 series for industrial automation.
| Brand | Sick |
| Product Type | Photolectric Sensor |
| Model Number | WTM12L-24161120A00 |
Sick WTM12L-24161120A00 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Functional principle | Photoelectric proximity sensor |
| Functional principle detail | Background suppression, Foreground suppression, MultiMode |
| Sensing range max. | 850 mm (Mode 1, 3, 4, 5), 350 mm (Mode |
| Sensing range | - |
| Polarisation filters | - |
| Light source | Laser |
| Type of light | Visible red light |
| Light spot size (distance) | 2.2 mm x 1.2 mm (300 mm) |
| Wave length | 655 nm |
| Adjustment | Teach-Turn adjustment, IO-Link |
| Angle of dispersion | - |
| Special applications | Detecting small objects, Detection of objects moving at high speeds, Detecting flat objects, Detecting uneven, shiny objects, Detection of poorly remitting and tilted objects, Detecting perforated objects |
| Items supplied | - |
| Supply voltage UB | 10 V DC ... 30 V DC |
| Ripple | ≤ 5 V |
| Current consumption | ≤ 14 mA, without load. At UB = 24 V |
| Protection class | III |
| Digital Output type | Push-pull: PNP/NPN |
| Switching mode | - |
| Signal voltage PNP HIGH/LOW | Approx. UB-2.5 V / 0 V |
| Output current Imax. | ≤ 100 mA |
| Response time | ≤ 500 µs, ≤ 1,000 µs, ≤ 15 ms (Mode 1, 2, 3, Mode 4, 5, Mode 1 and 6 combined) |
| Switching frequency | 1,000 Hz, 500 Hz, 30 Hz (Mode 1, 2, 3, Mode 4, 5, Mode 1 and 6 combined) |
| Output function | - |
| Special feature | - |
| Housing | Rectangular |
| Dimensions (W x H x D) | 15.6 mm x 49.5 mm x 43.1 mm |
| Connection | Male connector M12, 4-pin |
| Housing material | Metal, zinc diecast |
| Front screen material | Plastic, PMMA |
| Enclosure rating | IP66 (EN 60529), IP67 (EN 60529), IP69 (EN 60529) |
| Ambient operating temperature | –20 °C ... +55 °C |
| Ambient temperature, storage | –40 °C ... +70 °C |
| Weight | Approx. 77 g |
The WTM12L-24161120A00 Sick MultiMode Photoelectric Proximity Sensor is a Sick photoelectric sensor designed for flexible short-range detection in industrial automation. This model combines multimode background and foreground suppression, laser light at 655 nm, and a maximum sensing distance of 850 mm. Operating on 10–30 V DC with low current consumption, the WTM12L-24161120A00 is part of the Sick W12 series used in configurable sensing applications.
The WTM12L-24161120A00 Sick MultiMode Photoelectric Proximity Sensor is used in conveyors, packaging machinery, automated assembly, and high-speed material handling systems. Its selectable operating modes and defined response times up to 500 µs support reliable detection of small, flat, perforated, or poorly remitting objects. The focused laser spot enables stable sensing where conventional proximity sensors struggle with surface variations.
The WTM12L-24161120A00 from Sick delivers controlled optical detection for continuous industrial use. With laser-based multimode sensing, push-pull output capability, and IP-rated enclosure protection, this Sick photoelectric sensor supports dependable operation in demanding environments. As a W12 series device, the WTM12L-24161120A00 is suitable for applications requiring electrical stability, configurable detection behavior, and long-term reliability in automation systems.

