LR1500E4 905 nm Laser Ranging Module - GST inc

austarsmodel@yahoo.com (Austars Model Pty Ltd) — Thu, 05 Nov 2026 09:34:10 +0800

Meet the LR1500E4

The LR1500E4 is a compact ranging module in the E4 mechanical format. It provides digital distance measurements for equipment that needs a ranging subsystem rather than a standalone handheld meter.

Its standard measurement range is 4–1500 m. Accuracy is specified in two distance intervals, with a distance-dependent term above 400 m. Use the model-specific accuracy formula when setting your system requirements.

The UART-TTL interface supports host-controlled measurements. The manual includes test-software guidance, a six-pin interface definition, and a hexadecimal communication protocol. Use the E4 drawing for packaging and mounting; an E2 drawing is not an interchangeable mechanical reference.

1500 m range class

4–1500 m standard range with a model-specific long-distance accuracy formula.

Host-controlled ranging

2–10 Hz (adaptive); single-shot and continuous measurement modes.

Compact integration

25.7 × 14.2 × 26.2 mm nominal dimensions in the current mechanical drawing; detailed tolerances remain controlling.

UART-TTL interface

115200 bps communication and a 3.3–5 V supply range; use the model-specific pinout and command table.

TECHNICAL DATA

LR1500E4 Specifications

Read performance values with their target and test conditions. The linked user manual provides the complete mechanical, electrical, and communication details.

Parameter	Value	Conditions / notes
Laser wavelength	905 ± 5 nm	�
Measurement range	4–1500 m	Standard range; actual reach depends on target and environment.
Ranging accuracy	±1 m (D ≤ 400 m); ±(1 + 0.001D) m (D > 400 m)	Whiteboard target, 90% reflectivity: 2.3 × 2.3 m for the first distance interval; 2.3 × 4.6 m for the second.
Measurement update rate	2–10 Hz (adaptive)	Completed distance outputs; not the optical pulse-repetition rate.
Communication interface	UART-TTL	Custom configurations are specified separately.
Baud rate	115200 bps	�
Supply voltage	3.3–5 V	�
Operating temperature	−20 �C to +55 �C	�
Storage temperature	−40 �C to +60 �C	�
Mechanical drawing dimensions	25.7 × 14.2 × 26.2 mm	Drawing nominal values. Observe the individual tolerances in the model drawing; do not machine from the rounded summary alone.
Weight	≤10 g	�
Ingress protection	IP67	Lens cavity only; not a blanket rating for the exposed board or the complete host product.
Laser safety class	Class 1	As stated in the model manual; finished-equipment assessment is separate.
Laser beam divergence	< 6 mrad (small laser spot)	�
Optical material	Resin aspheric lens	�
Receiver aperture	9.2 mm × 14.5 mm	�
Startup time	≤ 200 ms	�
Inrush current	≈ 350 mA	Approximate value in the specification table.
Sleep power consumption	< 1 mW	�
Standby power consumption	≈ 0.2 W	Approximate value in the specification table.
Short-range power consumption	≈ 0.4 W	Approximate value in the specification table.
Operating power consumption	≈ 1 W	Approximate value in the specification table.

For civilian equipment only. The model manual prohibits military applications.

Operation and Data Output

Single-shot mode requests one reported distance. For a weak return, the manual describes repeated internal measurements before reporting stable distance data. Continuous mode produces repeated results at the documented adaptive update rate.

The standard measurement-rate specification is 2–10 Hz (adaptive). Higher-rate custom versions mentioned in the manual are separate configurations, not the default performance of a standard unit.

Electrical Interface

Pin	Signal	Function
1	GND	Power ground
2	VCC	Power input
3	I/O (Reserved)	Reserved for expansion
4	TXD	Transmit data: module → host
5	RXD	Receive data: host → module
6	SW-SHOT	Function-enable input. The required control polarity must match the supplied configuration.

Mechanical Dimensions

Use the drawing and its tolerances for installation. This drawing is reproduced directly from the current LR1500E4 user manual.

LR1500E4 Mechanical DrawingManual page 4. Open the PDF to inspect the original dimensions and tolerances.

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