SPD1200S2 · 905 nm Laser Rangefinder Module
SPD1200S2 UART wiring, pinout and serial protocol
The SPD1200S2 talks UART-TTL, Customizable @ Default: 115200bps and is powered from 3.3V~5V. Wire TX to the host RX, RX to the host TX, share ground, then send one of the commands below.
Electrical interface
| Parameter | Published value | Condition / note |
|---|---|---|
| Interface | UART-TTL, Customizable | |
| Baud rate | Default: 115200bps | |
| Supply voltage | 3.3V~5V |
SPD1200S2 pinout
| Pin | Signal | Note |
|---|---|---|
| 1 | GND | Power − |
| 2 | VCC | Power + |
| 3 | I/O (Reserved) | Reserved for expansion |
| 4 | TXD | Signal output port, Ranging Module → Host |
| 5 | RXD | Signal input port, Host → Ranging Module |
| 6 | SW-SHOT | Function Enable (active high) Note: Compatible with active-low control requirements |
Reading it from a computer
Open the port at the baud rate above, 8 data bits, no parity, 1 stop bit. The UART protocol decoder shows the frames live in a browser over WebSerial, and the erdi-lrf-drivers repository has Python, Arduino and ROS 2 readers for this frame format.
Ordering the SPD1200S2
The published single-unit price of the SPD1200S2 is $150. Prices include shipping and are ordered directly from erdilrf.com. Technical questions and quantity quotes: tommy@erdimail.com. Full specification table, downloads and ordering: SPD1200S2 model page.
FAQ
What is the maximum range of the SPD1200S2?
The published range is Catalog range: 0.2–1,200 m. Sources also report a 1,500 m night-time maximum under special conditions; it is not a guaranteed range. (Strong sunlight or low visibility may reduce range. The night-time row does not state a numeric target reflectivity or visibility condition; confirm performance against your actual target and environment.). A range figure is only comparable together with the target and conditions it was measured on, so the condition is listed next to the value.
Which interface does the SPD1200S2 use?
The published communication interface is UART-TTL, Customizable @ Default: 115200bps.
What laser wavelength does the SPD1200S2 use?
The published wavelength is 905nm±5nm; laser safety entry: IEC CLASS I.
How much does the SPD1200S2 cost?
The published single-unit price of the SPD1200S2 is $150. Prices include shipping and are ordered directly from erdilrf.com.
Related guides
- SPD1200S2 datasheet and specifications
- SPD1200S2 price and ordering
- SPD1200S2 power supply and current
- SPD1200S2 accuracy and range test conditions
- SPD1200S2 dimensions and weight
- UART laser rangefinder modules
- 905 nm laser rangefinder modules
- Class 1 laser rangefinder modules
- surveying laser rangefinder modules
Model records
Open the model page for the full specification table, downloads, published price and ordering.
- SPD1200S2 — SPD1200S2 905 nm Laser Rangefinder Module