- Descriptions
- Dimensions
- Specifications
- Applications
- Downloads
- Accessories
The L1 Series TTL Laser Distance Sensors use phase-shift laser ranging, a proven measurement principle for short- and medium-range applications requiring high accuracy and fast response. By continuously modulating the emitted laser beam and analyzing the phase difference of the reflected signal, the sensor calculates distance with millimeter-level precision.
Unlike enclosed industrial sensors, the L1 series is designed as a compact module, making it ideal for embedded systems, OEM products, and custom housings. The TTL UART interface enables direct connection to microcontrollers, single-board computers, and embedded controllers, minimizing system complexity.
The L1-40 is optimized for short-range precision tasks, while the L1-80 supports extended measurement distances when reflective targets are used. Both models provide stable performance, low power consumption, and flexible communication settings for system integration.
Specifications
| Item | Specification |
|---|---|
| Measurement Principle | Phase-Shift Laser Distance Measurement |
| Resolution | 1 mm |
| Repeatability | ±1 mm |
| Laser Wavelength | 650 nm |
| Optical Power | < 1 mW |
| Laser Type | Visible red dot laser |
| Spot Size | < 5 mm @ 10 m |
| Laser Lifetime | Approx. 20,000 hours |
| Power Supply | DC 5 V |
| Power Consumption | 0.6 W @ 20 Hz; standby < 0.2 W |
| System Startup Time | 600 ms |
| Communication Interface | TTL UART |
| Baud Rate | 9600 / 19200 / 38400 / 115200 (default 38400) |
| Serial Format | 8 data bits, 1 stop bit, no parity, no flow control |
| Communication Protocols | Modbus RTU / ASCII / Custom Hex |
| Sampling Rate | 10 Hz / 20 Hz (default 20 Hz) |
| Reference Point | Front reference |
| Operating Temperature | –10 °C to +50 °C |
| Operating Humidity | ≤ RH 85% |
Model-Specific Parameters
| Model | Measuring Range | Accuracy |
|---|---|---|
| L1-40 | 0.053–40 m | ±(1 mm + D × 5‰), typical ±1 mm |
| L1-80 | 0.05–80 m (reflector recommended for long range) | ±(1 mm + D × 5‰), typical ±1 mm |
Applications
- Embedded distance measurement systems
- Robotics and autonomous equipment
- Smart devices and intelligent terminals
- OEM laser ranging modules
- Position feedback and displacement control
- Small target detection and monitoring
- Custom laser measurement solutions
Application Notes
- Designed primarily for embedded and indoor applications.
- For long-range measurement (especially 80 m), reflective targets improve accuracy and stability.
- Performance may be affected under strong outdoor sunlight.
- External housing or protection is recommended for harsh environments.
| Dimensions | ![]() |
|---|
| Accuracy | ±1mm |
|---|---|
| Laser Wavelength | 650 nm |
Powering Success: Bringing Client Innovations to Reality
Below are excellent examples for our VIP customers. They have been tested, verified, and widely applied to application systems for years with huge volumes by our VIP customers. If you have a demand for antenna OEM/ODM service, no matter if it is big or small, please feel free to send us a message. We have the experience, capability, and R&D resources to make any OEM/ODM integration a glowing success!
All Files
| Title | Upload Date | File Type | Action |
|---|---|---|---|
| MyAntennaRF_USB-to-TTL_RS232_Interface-Converter_User-Guide_v1.0_2024-03-12_EN-CN | 2026-01-05 | N/A | Download |
| MyAntennaRF_USB-to-TTL_RS232_Interface-Converter_User-Guide_v1.0_2024-03-12_EN-CN | 2026-01-05 | N/A | Download |
| Laser Distance Sensor Catalogue 2025 -MyAntenna | 2025-12-26 | N/A | Download |
| L4 Series Lser Distance Sensor User Manual 250220 | 2025-12-26 | N/A | Download |
| L2 Series Lser Daistance Sensor User Manual 250325 | 2025-12-26 | N/A | Download |
| L3 Series Lser Distance Sensor User's Manual 231129 | 2025-12-26 | N/A | Download |
| L2 Series - User Manuals | 2025-12-18 | N/A | Download |
| N1 Series User’s Manual 251112 | 2025-12-17 | N/A | Download |
| L1 Series Laser Distance Sensor -User Manual | 2025-12-17 | N/A | Download |
| L1 Series - Laser Distance Senosr User Manual | 2025-12-15 | N/A | Download |
| D1 Series User’s Manual 231205 | 2025-12-12 | N/A | Download |

