SPD1200N4 905 nm Laser Ranging Module - GST inc

austarsmodel@yahoo.com (Austars Model Pty Ltd) — Thu, 05 Nov 2026 09:21:33 +0800

SPD1200N4 OEM Ranging and Integration

SPD1200N4 is a compact 905 nm laser ranging module with a 0.2–1200 m source-table ranging distance. The source documents UART-TTL communication for model-specific integration review. The specifications, drawings and electrical definitions below remain bound to this model. The technical literature section explains general principles without asserting an undocumented receiver architecture.

MODEL-LEVEL DATA

Detailed SPD1200N4 Specifications

Read the values together with their source conditions. Literature and related-model data do not replace these ratings.

Parameter	Value	Source condition
Laser wavelength	905 nm ±5 nm	SPD1200N4 controlled source technical table
Beam divergence	<4.5 mrad	SPD1200N4 controlled source technical table
Optical material	Aspheric lens	SPD1200N4 controlled source technical table
Receiver aperture	Diameter 6.5 mm	SPD1200N4 controlled source technical table
Ranging distance	0.2–1200 m; maximum 1500 m at night	SPD1200N4 controlled source technical table; strong sunlight or low visibility may reduce range
Ranging accuracy	±0.3 m (D ≤100 m); ±0.3 m + D × 0.7‰ (100 m < D <1200 m)	SPD1200N4 controlled source technical table
Measurement frequency	2–15 Hz or 4–15 Hz, adaptive	SPD1200N4 controlled source technical table; both alternatives appear in the same formal source row
Valid measurement rate	≥98%	SPD1200N4 controlled source technical table
False-alarm rate	≤1%	SPD1200N4 controlled source technical table
Communication interface	UART-TTL (customizable)	SPD1200N4 controlled source technical table
Baud rate	115200 bps (default)	SPD1200N4 controlled source technical table
Supply voltage	3.3–5 V	SPD1200N4 controlled source technical table
Startup time	≤200 ms	SPD1200N4 controlled source technical table
Operating power	Average ≈0.45 W; maximum ≤0.75 W	SPD1200N4 controlled source technical table
Operating temperature	-20�C to +60�C	SPD1200N4 controlled source technical table
Storage temperature	-30�C to +70�C	SPD1200N4 controlled source technical table
Protection rating	IP67 inside lens chamber	Source-stated classification or rating; not independently certified by this page
Laser safety class	IEC Class I	Source-stated classification or rating; not independently certified by this page
Dimensions	7.7 × 16.7 mm (only two source-stated dimensions)	SPD1200N4 controlled source technical table
Weight	≈5 g	SPD1200N4 controlled source technical table
Shock	1000 g/ms (10 times/s along optical axis)	SPD1200N4 controlled source technical table; source test wording retained
Vibration	5–50–5 Hz, 1 octave/min, 2.5 g	SPD1200N4 controlled source technical table
Reliability	MTBF ≥1500 h	SPD1200N4 controlled source technical table

Functional Description

The source lists baud-rate modification as a serial-interface function.

Single ranging measures the target once. For a low-reflectivity target, the source says the module repeats measurements until stable distance data is obtained and reports it through the serial interface.

Repeated-ranging mode performs continuous distance measurement. The functional section states a typical configurable 2 Hz refresh rate and a maximum of 15 Hz; the formal frequency row separately retains both 2–15 Hz and 4–15 Hz alternatives.

Electrical Interface Definition

Pin	Signal	Function
1	GND	Power ground
2	VCC	Positive supply
3	IO (reserved)	Reserved for expansion
4	TXD	Signal output, rangefinder module to host
5	RXD	Signal input, host to rangefinder module
6	SW-SHOT	Function enable; no public default polarity is stated

Check the numbered connector view before wiring. Supply voltage and UART input tolerance are different electrical limits.

Mechanical Dimension Drawing and Electrical Interface Diagram