A Compact, Low-Power TOF Laser Ranging Sensor for Industrial and Consumer Applications
The LDL-T is a next-generation TOF laser ranging sensor based on indirect Time-of-Flight (iToF) phase-shift technology. As a leading TOF laser ranging sensor in its class, it delivers exceptional accuracy, flexible measurement modes, and reliable performance for robotics, automation, and portable devices.
🔥 Why Choose This TOF Laser Ranging Sensor?
1. Industry-Leading Accuracy
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Accuracy: ±(1 mm + D/10000)
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Resolution: 1 mm
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Range: 0.03 m – 60 m
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This TOF laser ranging sensor uses iToF phase-shift method to achieve millimeter-level resolution – much higher than conventional dToF sensors in short-to-medium range.
2. Flexible Measurement Modes for Every Application
| Mode | Description |
|---|---|
| Single Measurement | One result per trigger – ideal for on-demand ranging |
| Continuous Measurement | 5Hz / 30Hz / 100Hz adjustable – perfect for real-time tracking |
| Multi-Node Measurement | Broadcast command (0x7F) triggers all modules simultaneously |
3. Ultra-Compact & Lightweight
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27.87 × 17.03 × 7.01 mm – smaller than a coin
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3 grams – easily embed into drones, robots, or handheld devices
4. Ultra-Low Power Consumption
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Dry cell (2.5–3.6V): <100mA continuous, <30mA standby, <10μA shutdown
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Li-ion (3.5–4.2V): <80mA continuous, <30mA standby, <8μA shutdown
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Ideal for battery-powered IoT and portable devices
5. Robust Networking Capability
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Supports up to 8 modules per network segment and up to 128 modules total
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Simple USART (TTL 3.3V) interface, expandable to RS232 / RS485
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Automatic baud rate detection (9600–115200 bps) or fixed baud rate options
6. Safe Laser Emission
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CLASS II laser (<1mW, 610–690nm) – safe for consumer use
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Compliant with IEC 60825-1 standard
7. Wide Environmental Adaptability
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Operating temperature: -10°C to +50°C (14°F to 122°F)
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Storage temperature: -25°C to +60°C (-13°F to 140°F)
💡 Application Cases
🤖 Robotics & AGV
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Obstacle avoidance and anti-collision using the TOF laser ranging sensor
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Docking assistance for autonomous mobile robots
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Precision positioning for robotic arms
🏭 Industrial Automation
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Level monitoring in silos and tanks with a reliable TOF laser ranging sensor
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Conveyor belt object dimensioning
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Machine safety zones and presence detection
📦 Smart Logistics & Warehousing
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Automated warehouse bin occupancy detection
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Dimensioning of parcels for sorting systems
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Forklift collision warning systems
🏠 Smart Home & Building Automation
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Automatic door opening triggers
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Smart lock distance detection – all enabled by a compact TOF laser ranging sensor
🔧 Handheld Measuring Instruments
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Laser distance measurers (LDMs)
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Construction and renovation tools
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Real estate room sizing devices
🚁 Drones & UAVs
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Altitude hold and terrain following
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Precision landing assistance
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Collision avoidance in indoor navigation
🅿️ Smart Parking Systems
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Parking space occupancy detection
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Vehicle presence and height monitoring
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Range | 0.03 – 60 m |
| Accuracy | ±(1 mm + D/10000) |
| Resolution | 1 mm |
| Continuous Freq. | 5 / 30 / 100 Hz |
| Laser Class | CLASS II (<1mW, 610-690nm) |
| Interface | USART (TTL 3.3V) |
| Supply (Dry) | 2.5–3.6V |
| Supply (Li-ion) | 3.5–4.2V |
| Dimensions | 27.87×17.03×7.01 mm |
| Weight | 3 g |
| Operating Temp. | -10°C to +50°C |
Custom baud rates and wider temperature ranges available upon request.
🔌 Simple Integration
Pin connections (6 pins, 0.5mm pitch):
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VCC – Power input
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PWREN – Module enable (active high)
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GND – Ground
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TXD – Serial transmit (3.3V TTL)
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nRST – Reset (optional)
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RXD – Serial receive
Communication settings: 8 data bits, 1 stop bit, no parity, baud rate 9600–115200 bps.
Full command set and timing diagrams are available in the LDL-T User Manual.
Compare different Meskernel laser distance sensor models in video demos
Ordering Information
| Model | Power Version | Typical Voltage | Leakage Current |
|---|---|---|---|
| LDL-T-Dry | Dry cell | 3.3 V | <10 μA |
| LDL-T-Li | Lithium battery | 4.0 V | <8 μA |
Both versions are the same compact TOF laser ranging sensor with identical mechanical dimensions and communication protocol.
