DESCRIPTION
The LRF0305C-02 laser ranging module represents the latest offering from Erdi Technology, characterized by a compact structure and streamlined form factor. Leveraging Time-of-Flight (TOF) technology, it delivers precise distance measurements across a range of 10 meters to 4000 meters. Additionally, the module supports a 3Hz-10Hz ranging frequency and is equipped with a UART (TTL 3.3V) communication interface for seamless data transmission.
TECHNICAL SPECIFICATIONS
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Laser Wavelength
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1535±5nm
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Eye- safety
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Class Ⅰ (IEC 60825-1)
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Divergence Angle
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≤0.6 mrad
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Laser Energy
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≥100 μJ
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Field of View (FOV)
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~ 7. 4mrad
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Maximum Measuring Range
(Visibility > 8km)
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≥ 4000m @60% Reflectivity, Building Target
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≥3000m @30% Reflectivity, 2.3×2.3m Target
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≥1500m @30% Reflectivity, 0.5×1.7m Target
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≥800m @30% Reflectivity, 0.2×0.3m Target
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Minimum Range
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≤10 m
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Ranging Frequency
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1Hz ~10Hz
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Multi-Target Detection
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Up to 3 targets
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Ranging Accuracy
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±1 m
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Accuracy Rate
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≥98%
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False Alarm Rate
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≤1%
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Interface Type
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UART(TTL 3.3V)
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Power Supply Voltage
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DC 3~5V
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Standby Power Consumption
(Full Temperature Range)
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≤10mW (Power on pulled low)
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≤0.8W (Power on pulled high)
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Operating Power Consumption
(Full Temperature Range)
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5V.≤0.9W@1Hz
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5V,<1. 5W@10Hz
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Peak Power Consumption
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<3W@5V
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Start-up Time
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≤350ms (After startup, response time ≤20ms)
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Weight
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≤ 14士1g
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Dimensions
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≤ 27×25×15.5mm(L×W×H)
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Shock
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1200g, 1ms
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Vibration
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5~50~5 Hz, 1 octave/min, 2.5g
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Operating Temperature
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-40 ~ +70℃
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Storage Temperature
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-45 ~ +70℃
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Reliability
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MTBF>1500h
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OUTLINE DIMENSION(mm)

Recommended mounting bracket dimensions are as follows:

Installation Diagram:

PIN INTERFACE
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Pin
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Definition
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Description
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1
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POWER_ON
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Module Power Switch, TTL 3.3V Level;
Module On (>2.7V), Module Off (<0.3V)
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2
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UART_RX
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Serial Port Receiver, TTL 3.3V Level
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3
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UART_TX
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Serial Port Transmitter, TTL 3.3V Level
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4
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NC
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5
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Power Positive
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Power Supply, 3~5V
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6
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GND
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Serial Port Ground
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