# Slamtec RPLIDAR A3M1 25 m 360° Lidar

> Slamtec RPLIDAR A3M1: 360° 2D laser-triangulation scanner with OPTMAG, 0.2–25 m on white (10 m black) in enhanced mode, 20 m in outdoor mode, 16 kHz sampling, 10 Hz typical (5–15 Hz), 0.225° angular resolution, 785 nm Class 1, 3.3 V UART at 256000 bps, single 5 V supply (450 mA typ.), XH2.54-5P lead, Ø76 × 41 mm, 190 g.

- Manufacturer: Slamtec
- Part number: A3M1
- Category: Lidar & ToF range sensors
- Canonical page: https://www.xirkit.io/products/slamtec-rplidar-a3m1-25-m-360-lidar-103d
- Pinout: https://www.xirkit.io/products/slamtec-rplidar-a3m1-25-m-360-lidar-103d/pinout
- Structured JSON: https://www.xirkit.io/products/slamtec-rplidar-a3m1-25-m-360-lidar-103d/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Lidar type | 2D scanning |
| Ranging method | triangulation |
| Min range | 0.2 m |
| Max range | 25 m |
| Accuracy detail | Resolution ≤ 1 % of distance (≤ 12 m), ≤ 2 % (12–25 m) per DFRobot; Slamtec prints no accuracy figure |
| Scan frequency | 10 Hz |
| Sample rate | 16,000 Hz |
| Angular resolution | 0.225 ° |
| Horizontal field of view | 360 ° |
| Wavelength | 785 nm |
| Laser safety class | Class 1 (IEC 60825) |
| Interface | UART |
| ROS 2 driver | Yes |
| ROS drivers | rplidar_ros (ros2 branch), rplidar_ros (ROS 1) |
| Weight | 190 g |
| Supply voltage | 4.9–5.2 V |
| Dimensions | 76 × 76 × 41 mm |
| Operating temperature | 0 to 40 °C |

## Pinout (5 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| VCC | XH2.54-5P | power in | — | power_in | — | — | — | — | — | — | — |
| TX | XH2.54-5P | uart tx | — | tx | — | — | — | — | — | — | — |
| RX | XH2.54-5P | uart rx | — | rx | — | — | — | — | — | — | — |
| GND | XH2.54-5P | ground | — | ground | — | — | — | — | — | — | — |
| MOTOCTL | XH2.54-5P | motor ctrl | — | motoctl | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.dfrobot.com | 599 USD | in_stock | 2026-10-17 | https://www.dfrobot.com/product-1772.html |

## FAQ

**What voltage powers the Slamtec RPLIDAR A3M1 25 m 360° Lidar?**

Supply range 4.9–5.2 V.

**How much does the Slamtec RPLIDAR A3M1 25 m 360° Lidar cost?**

From $599 at www.dfrobot.com. Prices are observed unit prices before tax and shipping.

**What are the Slamtec RPLIDAR A3M1 25 m 360° Lidar dimensions?**

76 × 76 × 41 mm. A STEP model is available for enclosure fit checks.

**Where does this Slamtec RPLIDAR A3M1 25 m 360° Lidar data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Slamtec RPLIDAR A3M1 25 m 360° Lidar datasheet](https://raw.githubusercontent.com/May-DFRobot/DFRobot/master/LD310_SLAMTEC_rplidar_datasheet_A3M1_v1.9_en.pdf)
- [www.dfrobot.com listing](https://www.dfrobot.com/product-1772.html)

## Part graph

### Alternatives (by use case)

- [Hesai JT16 Mini 3D Lidar](https://www.xirkit.io/products/hesai-jt16-mini-3d-lidar-59bc) — Both serve slam mapping and navigation — check the trade-offs; $745 vs $599
- [Livox Mid-360 3D Lidar](https://www.xirkit.io/products/livox-mid-360-3d-lidar-73d2) — Both serve slam mapping and navigation — check the trade-offs; $999 vs $599
- [RoboSense Airy 96-Beam 3D Lidar](https://www.xirkit.io/products/robosense-airy-96-beam-3d-lidar-43d0) — Both serve slam mapping and navigation — check the trade-offs; $1099 vs $599
- [Unitree 4D LiDAR L2](https://www.xirkit.io/products/unitree-4d-lidar-l2-069b) — Both serve slam mapping and navigation — check the trade-offs; $599 vs $395
- [Slamtec RPLIDAR S2 360° dToF Lidar](https://www.xirkit.io/products/slamtec-rplidar-s2-360-dtof-lidar-653b) — Both serve slam mapping and navigation — check the trade-offs; $399 vs $599
- [Livox Mid-360L 3D Lidar](https://www.xirkit.io/products/livox-mid-360l-3d-lidar-d1c0) — Both serve slam mapping and navigation — check the trade-offs; $600 vs $599
- [RoboSense E1R Solid-State 3D Lidar](https://www.xirkit.io/products/robosense-e1r-solid-state-3d-lidar-186e) — Both serve slam mapping and navigation — check the trade-offs; $999 vs $599
- [YDLIDAR TG30 360° ToF Lidar (IP65)](https://www.xirkit.io/products/ydlidar-tg30-360-tof-lidar-ip65-d5e4) — Both serve slam mapping and navigation — check the trade-offs; $440 vs $599

### Variants

- [Slamtec RPLIDAR A1M8 360° Lidar (dev kit)](https://www.xirkit.io/products/slamtec-rplidar-a1m8-360-lidar-dev-kit-0e28) — Same Slamtec RPLIDAR A-series 360° triangulation scanner and rplidar_ros driver; A3M1 is the long-range (25 m, 16 kHz, OPTMAG, outdoor mode) model, A1M8 the 12 m / 8 kHz entry model