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ERDI Laser LR1500E2 laser rangefinder module with two front lenses and exposed circuit boardERDI Laser LR1500E2 laser rangefinder module with two front lenses and exposed circuit board

LR1500E2

The ERDI LR1500E2 is a 905 nm laser rangefinder module for OEM integration into drone payloads, handheld meters and fixed sensors. Its standard 4–1,500 m range depends on target and environmental conditions. UART-TTL communication, adaptive 2–10 Hz distance output and a 3.3–5 V supply support integration, while IP67 protection covers the lens cavity only.

ERDI LaserPayloads & thermal cameras
Applications
Drone payloads, handheld meters and pole-mounted sensors
Supply voltage
3.3–5 V
Ingress protection
IP67

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Product overview

The ERDI LR1500E2 provides distance measurement for drone payloads, handheld instruments and fixed sensors. UAV applications include altitude reference, mapping cameras and inspection gimbals, while ground applications include forestry, construction and monitoring distant surfaces. Its standard measurement range is 4–1,500 m, with actual reach dependent on the target and environment. Dark, small or angled surfaces, haze and strong sunlight shorten the range. Single-shot mode returns one reported distance; continuous mode delivers completed distance outputs at an adaptive 2–10 Hz.

The optical assembly uses a resin aspheric lens, a 9.2 mm × 14.5 mm receiver aperture and a 905 ± 5 nm laser with beam divergence below 6 mrad. The module measures 25.7 ± 0.1 mm × 13.3 ± 0.1 mm × 24.6 mm (+0/−0.05 mm) and connects through UART-TTL at 115200 bps. It operates from 3.3–5 V across −20 °C to +55 °C. IP67 protection applies only to the lens cavity; the board side requires protection from the host housing. A mechanical drawing is supplied with the order.

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Specifications

LR1500E2 specifications
SpecificationValue & conditions
ProductERDI LR1500E2 laser rangefinder module
ApplicationsDrone payloads, handheld meters and pole-mounted sensors
Laser wavelength905 ± 5 nm
Measurement range4–1,500 mStandard range; actual reach depends on target and environment.
Ranging accuracy±1 m (6 m ≤ D less than 500 m); ±(0.5 m + 0.001D) (500 m ≤ D ≤ 1,500 m)Whiteboard target, 90% reflectivity: 2.3 × 2.3 m for 6 m ≤ D less than 500 m; 2.3 × 4.6 m for 500 m ≤ D ≤ 1,500 m.
Measurement update rate2–10 Hz (adaptive)Completed distance outputs; not the optical pulse-repetition rate.
Communication interfaceUART-TTLStandard configuration; custom configurations are specified separately.
Baud rate115200 bps
Supply voltage3.3–5 V
Operating temperature−20 °C to +55 °C
Storage temperature−40 °C to +60 °C
Mechanical drawing dimensions25.7 ± 0.1 mm × 13.3 ± 0.1 mm × 24.6 mm (+0/−0.05 mm)
Ingress protectionIP67Lens cavity only; excludes the exposed board and complete host product.
Laser safety classClass 1 (IEC 60825-1)Module classification; finished-product classification depends on its optical path and configuration.
Laser beam divergenceLess than 6 mrad (small laser spot)
Optical materialResin aspheric lens
Receiver aperture9.2 mm × 14.5 mm
Startup time≤ 200 msAfter power-on, before the first command.
Inrush current≈ 350 mAAt power-up.
Sleep power consumptionLess than 1 mWSleep mode.
Standby power consumption≈ 0.2 WStandby.
Short-range power consumption≈ 0.4 WShort-range ranging.
Operating power consumption≈ 1 WWhile ranging.
Supplied drawingMechanical drawing supplied with the order
Measurement modesSingle-shot and continuous measurementSingle-shot mode requests one reported distance; continuous mode uses the adaptive update rate.
Assembly and calibrationAssembled, aligned, calibrated and accepted in-house in Chengdu

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