DDA-Y / DDB-Y Series
Industrial Laser Distance Sensor
High-precision IP67 laser ranging sensor up to 100 meters, featuring RS485 / RS232 communication, analog output, a 128×32 dot-matrix display and Modbus RTU protocol. Designed for demanding industrial automation environments.
1. Key Parameters
Measuring Range
0.2 – 100 m (model dependent)
Accuracy
±(2 mm + 0.01% of distance)
Laser Class
Class II, 660 ±15 nm, ≤1 mW
Ingress Protection
IP67
Response Frequency
1–40 Hz (5 speed grades)
Output Types
Dual switch + Analog (DDB-Y) + RS485/RS232
2. Detailed Specifications
| Category | DDA-Y Series | DDB-Y Series |
|---|---|---|
| Measurement Performance | ||
| Models | DDA-Y10 / Y20 / Y30 / Y50 / Y100 | DDB-Y10 / Y20 / Y30 / Y50 / Y100 |
| Range | 0.2–10/20/30/50/100 m | Same as DDA-Y |
| Accuracy | ±(2 mm + 0.01% of distance) | |
| Resolution | 1 mm | |
| Laser Wavelength | 660 nm ±15 nm | |
| Electrical Characteristics | ||
| Power Supply | DC 15–30 V | |
| Power Consumption | < 3.0 W | |
| Switch Outputs | 2×NPN/PNP, ≤36V / 0.5A | |
| Analog Output | — | 0–5V / 0–10V / 4–20mA, etc. |
| Communication & Environment | ||
| Interface | RS232 / RS485 (menu-selectable) | |
| Protocol | Modbus RTU | |
| Operating Temp. | –10°C to +50°C | |
| Protection Rating | IP67 | |
| Housing Material | Die-cast zinc alloy | |
3. Wiring Diagram
Menu-selectable RS485/RS232, M12 8-pin connector with power, communication, switch, and analog signal pins.
4. Mechanical Dimensions
Dimensions: 88.45 × 40 × 59.3 mm (with mounting bracket), M12 connector, standard industrial mounting holes.
5. Additional Resources
OLED User Interface
128×32 dot-matrix display with 4-button on-site configuration
Typical Applications
Level, positioning, and thickness measurement in industrial settings
Frequently Asked Questions
What is the measuring range and accuracy of the DDA-Y / DDB-Y laser distance sensor?
The series covers 0.2 m up to 100 m depending on the model (Y10 / Y20 / Y30 / Y50 / Y100), with an accuracy of ±(2 mm + 0.01% of distance) and 1 mm resolution. The 660 nm visible red laser makes alignment easy, so it suits level, positioning and thickness measurement across short and long industrial spans.
What is the difference between the DDA-Y and DDB-Y models?
Both share the same ranging engine, IP67 housing and RS485/RS232 interface. The DDA-Y provides dual NPN/PNP switch outputs only, while the DDB-Y adds a configurable analog output (0–5 V, 0–10 V or 4–20 mA) for continuous level or position feedback into a PLC or controller. Choose DDB-Y when you need an analog signal.
Does the sensor support Modbus RTU and how do I wire RS485 or RS232?
Yes. The interface is switched between RS485 and RS232 in the on-device setup menu (Communication Settings → Port) and speaks Modbus RTU, so it drops into existing PLC, HMI and SCADA networks. Wiring uses an M12 8-pin connector carrying DC 15–30 V power, communication lines, two switch outputs and (on DDB-Y) the analog signal. RS485 is preferred for long multi-drop runs — up to 64 units share one bus with station addresses 1–64.
Is the DDA-Y / DDB-Y laser sensor safe and rated for harsh environments?
The laser is a Class II visible red laser, 660 nm ±15 nm at ≤1 mW output power; as with any laser product, do not stare directly into the beam. The die-cast zinc alloy body carries an IP67 ingress rating for dust and washdown, and it operates from –10 °C to +50 °C (storage –20 °C to +60 °C, 20–85% RH), making it suitable for dusty, damp or vibrating factory environments. Built-in thermal protection stops measurement above 70 °C body temperature and resumes below 70 °C.
Can this laser distance sensor replace an imported brand for industrial level or position measurement?
In most cases yes. With a 0.2–100 m range, ±(2 mm + 0.01%) accuracy, RS485/RS232 Modbus RTU, dual switch and analog outputs and an IP67 M12 connection, the DDA-Y / DDB-Y matches the form and signal interface of common imported laser ranging sensors. Match the range model, output type and connector to the unit being replaced.
Specs reviewed by Engineer Cai, Senior Application Engineer. See certificates.