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Brand: SICK
SICK DT35-B15551 Dx35 Distance Sensor
Description
DT35-B15551, part no. 1057651, is a SICK Dx35 sensor for contactless distance and position measurement. The catalogue summary lists: communication interface: IO-Link; laser class: 1; light source: Laser, red; minimum response time: 4.5 ms; digital output: 1 … 2 x push-pull: PNP/NPN.
Understanding the DT35-B15551 before you specify it
Surface colour and gloss influence the achievable range, so figures are quoted for defined reference targets. A visible red laser spot helps with alignment, and the output interface (analog, switching or IO-Link, as listed) determines how the value reaches the control.
A switching output with teachable limits can replace a separate limit sensor when only a go/no-go decision is needed. Temperature drift and warm-up behaviour are listed in the data sheet and matter for high-accuracy positioning.
Technical specifications
| Parameter | Specification |
|---|---|
| Type code | DT35-B15551 |
| Part number | 1057651 |
| Product family | Dx35 |
| Measuring range | 50 mm … 12,000 mm, 90% remission factor; 50 mm … 5,300 mm, 18% remission factor; 50 mm … 3,100 mm, 6% remission factor |
| Target | Natural objects |
| Resolution | 100 µm |
| Measurement accuracy | Typ. ± 10 mm |
| Response time | 4.5 ms … 192.5 ms, 4.5 ms / 12.5 ms / 24.5 ms / 48.5 ms / 192.5 ms |
| Switching frequency | 166 Hz/50 Hz/25 Hz/12 Hz/3 Hz |
| Output time | 2 ms … 64 ms, 2 ms/4 ms/8 ms/16 ms/64 ms |
| Emitted beam: Light source | Laser, red |
| Emitted beam: Type of light | Visible red light |
| Emitted beam: Typ. light spot size (distance) | 15 mm x 15 mm (at 2 m) |
| Key laser figures: Normative reference | IEC 60825-1:2014, EN 60825-1:2014 |
| Key laser figures: Laser class | 1 |
| Key laser figures: Average laser service life (at 25 °C) | 100,000 h |
| Safety-related parameters: MTTFD | 101 years |
| Safety-related parameters: DCavg | 0% |
| IO-Link | ✔ , IO-Link V1.1 |
| Function | Process data, parameterization, diagnosis, data storage |
| Data transmission rate | 38.4 kbit/s |
| Digital output: Number | 1 … 2 |
| Digital output: Type | Push-pull: PNP/NPN |
| Digital output: Function | Output Q2 adaptable: Current output / Voltage output / Digital output |
| Digital output: Maximum output current IA | ≤ 100 mA |
| Analog output: Number | 1 |
| Analog output: Type | Current output / voltage output |
| Analog output: Function | Output Q2 adaptable: Current output / Voltage output / Digital output |
| Analog output: Current | 4 mA … 20 mA, ≤ 450 Ω |
| Analog output: Voltage | 0 V … 10 V, ≥ 50,000 Ω |
| Declarations and certificates in the data sheet | EU declaration of conformity; UK declaration of conformity; ACMA declaration of conformity; Moroccan declaration of conformity; China RoHS; cTUVus certificate; Information according to Art. 3 of Data Act (Regulation EU 2023/2854) |
Type code DT35-B15551 and what to check before ordering
Electrically and for the interface, the listed values are supply DC 12 V … 30 V; resolution 100 µm; current ≤ 100 mA; response time 4.5 ms … 192.5 ms, 4.5 ms / 12.5 ms / 24.5 ms / 48.5 ms / 192.5 ms; frequency 166 Hz/50 Hz/25 Hz/12 Hz/3 Hz; power draw ≤ 1.7 W.
Mechanical and environmental data for this type: dimensions: 32 mm x 58.67 mm x 42.7 mm; weight: 65 g; light source: laser, red; vibration: EN 60068-2-6, EN 60068-2-64; shock: EN 60068-2-27; housing: plastic (ABS/PC); enclosure rating: IP65; IP67.
Review enclosure rating and temperature range in the table for the environment.
Do not mount the sensor where hot surfaces or direct sunlight shine on the optics.
Documents and quotation
You can download the SICK data sheet for DT35-B15551 (part no. 1057651) from this page. Send the type code, quantity and delivery location through the RFQ form and Seven Star LLC, an independent supplier in Muscat, will respond with a quotation. Similar products sit under Sensors & Transmitters. Confirm the full code against the device it replaces; if this page and the data sheet ever disagree, follow the data sheet.
Datasheets & Documents
- Data Sheet SICK DT35-B15551 official data sheet (part no. 1057651) Download
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About brand
SICK is the German maker of industrial sensors: photoelectric and proximity sensors, safety laser scanners and light curtains, encoders, distance sensors, code readers and gas analysers. Erwin Sick, an optics engineer, founded it in Munich in 1946, and in 1952 it introduced its first marketable accident-prevention light curtain, which protected press operators by stopping the machine when a hand broke the light beam. The company moved to Waldkirch in the Black Forest in 1956 and is still headquartered there. It is a privately held company, and has been an Aktiengesellschaft (AG) since 1996.
SICK company profile
| Founded | 1946, Munich, Germany, by Erwin Sick (1909–1988) |
|---|---|
| Headquarters | Waldkirch, Baden-Württemberg, Germany (since 1956) |
| Ownership | Privately held; after the founder's death in 1988 his widow Gisela Sick became the main shareholder. Legal form SICK AG since 1996 |
| Size | More than 12,000 employees and group revenue of about EUR 2.3 billion (company figures for 2023) |
| First breakthrough | Accident-prevention light curtain for presses, shown in Hanover in 1952 |
| International growth | First foreign subsidiary in France in 1972, United States in 1976; today sales and service companies worldwide |
| Product families | Photoelectric, inductive, capacitive, magnetic and ultrasonic sensors; safety laser scanners, light curtains, safety controllers and relays; encoders and motor feedback systems; distance sensors and LiDAR; barcode and 2D code readers and machine vision; gas analysers, dust and flow measurement for process and emissions monitoring |
Milestones
- 1946: Erwin Sick receives a licence to run his engineering firm in Munich.
- 1952: The first marketable accident-prevention light curtain is presented in Hanover and goes into series production.
- 1956: The company moves to Waldkirch with 25 employees.
- 1972 and 1976: Subsidiaries are founded in France and the United States.
- 1996: SICK becomes an Aktiengesellschaft.
- Today: Sensors for factory and logistics automation, machine safety and process analysis, with a large share of revenue outside Germany.
Choosing a SICK sensor
For object detection, the sensing principle comes first. A retro-reflective sensor (WL series) sends light to a reflector and switches when an object breaks the beam; it is reliable over long distances and easy to align. A sensor with background suppression (WTB series) detects an object at a set distance and ignores what is behind it, which suits conveyors with shiny or dark backgrounds. A through-beam pair (WS/WE) gives the longest range and the highest reliability in dust. For transparent bottles and film, use a model built for transparent objects (for example WL12G-3B or WL150-P420). The digits in the code also matter: "P" usually means a PNP output and "N" NPN, and the last digits set the connector or cable. For machine guarding, a safety laser scanner such as nanoScan3 or microScan3 protects an area, while a safety controller such as Flexi Soft combines several safety devices.
Where SICK products are used
In Oman and the GCC, SICK sensors are used in packaging and bottling lines, food and beverage plants, logistics and airport baggage handling, cement and steel plants, ports and cranes, automated warehouses, and on machines built by European OEMs. SICK safety scanners guard robots and automated guided vehicles, and its encoders give position feedback on motors, hoists and conveyors.
SICK products we list
| Family | Examples |
|---|---|
| Photoelectric sensors | WL12-3P2431, WTB12-3P2431, GTB6-P4211, VL18-4P3240, WL12G-3B2531, WS/WE100, KT5W contrast, W26 IO-Link |
| Proximity, cylinder and ultrasonic sensors | IME12-08NPSZC0S, IME18-05BPSZC0S, MZT8, UM18 4-20 mA, UM30, UFN3 fork |
| Machine safety | nanoScan3, microScan3, S300 Professional, Flexi Soft FX3-CPU1, FX3-XTIO, ReLy OSSD |
| Encoders and motor feedback | DFS60B, AFM60 PROFINET, AFS60 SSI, ATM60 PROFIBUS, SRS50, EFS50 |
| Distance sensors and code readers | DT50, DL50, DT35, Lector632 |
Ordering SICK products: what we need
Send the type code and the 7-digit SICK part number from the label (for example WTB12-3P2431 together with its part number). For a replacement sensor, add the output (PNP or NPN), connection (M8, M12 or cable) and sensing distance. For encoders, add the interface (incremental, SSI, PROFIBUS, PROFINET), resolution and shaft type. For safety scanners, tell us the model and whether the existing configuration needs to be kept.
Facts checked against SICK's published company history and annual figures, October 2026.
Browse SICK products by category: Sensors & Transmitters.
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Frequently Asked Questions
What is the SICK DT35-B15551?
It is a SICK distance sensor (Dx35), part no. 1057651. The catalogue summary reads: Communication interface: IO-Link; Laser class: 1; Light source: Laser, red; Minimum response time: 4.5 ms.
Which supply voltage applies to the DT35-B15551?
Supply voltage is DC 12 V ... 30 V. Check the output and interface rows in the table for the signal levels.
What protection rating and temperature range are given?
Enclosure rating: IP65; IP67. Confirm both against the site before ordering.
Does the page include the data sheet?
Yes. The official SICK data sheet for part no. 1057651 is attached as a PDF and linked on this page; where it differs from the page text, the data sheet applies.
What should be confirmed before ordering the DT35-B15551?
Compare the full type code and part number 1057651 with the device being replaced, check supply, output or interface and mounting, and send the details through the RFQ form. Seven Star LLC is an independent supplier, not a SICK partner.
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