# LDROBOT STL-27L 25 m dToF Lidar

> LDROBOT STL-27L: 360° 2D dToF lidar, 0.03–25 m on an 80 % white target and 0.03–10 m on 4 % black, ±15 mm to 2 m / ±30 mm beyond 8 m, 21 600 measurements/s at 10 Hz (0.167°), 60 klux, one-way UART 921600 baud, PWM speed input, 5 V / 290 mA, IP5X, 45 g, 54 × 46.29 × 34.8 mm.

- Manufacturer: LDROBOT
- Part number: STL-27L
- Category: Lidar & ToF range sensors
- Canonical page: https://www.xirkit.io/products/ldrobot-stl-27l-25-m-dtof-lidar-6764
- Pinout: https://www.xirkit.io/products/ldrobot-stl-27l-25-m-dtof-lidar-6764/pinout
- Structured JSON: https://www.xirkit.io/products/ldrobot-stl-27l-25-m-dtof-lidar-6764/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 | dToF |
| Min range | 0.03 m |
| Max range | 25 m |
| Max range rated at reflectivity | 80 % |
| Accuracy (±) | 30 mm |
| Accuracy detail | ±15 mm (0.03–2 m), ±20 mm (2–8 m), ±30 mm (> 8 m) |
| Scan frequency | 10 Hz |
| Sample rate | 21,600 Hz |
| Angular resolution | 0.167 ° |
| Horizontal field of view | 360 ° |
| Wavelength | 905 nm |
| Laser safety class | Class 1 (IEC 60825) |
| Interface | UART |
| ROS 2 driver | Yes |
| ROS drivers | LDROBOT STL SDK (ROS 1 / ROS 2) |
| Ambient light rating | 60 klux |
| IP rating | IP5X |
| Weight | 45 g |
| Supply voltage | 4.5–5.5 V |
| Dimensions | 54 × 46.29 × 34.8 mm |
| Operating temperature | -10 to 50 °C |

## Pinout (4 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Tx | ZH1.5T-4P | uart tx | — | tx | — | — | — | — | — | — | — |
| PWM | ZH1.5T-4P | motor ctrl | — | pwm | — | — | — | — | — | — | — |
| GND | ZH1.5T-4P | ground | — | ground | — | — | — | — | — | — | — |
| P5V | ZH1.5T-4P | power in | — | power_in | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.dfrobot.com | 160 USD | in_stock | 2026-10-17 | https://www.dfrobot.com/product-2726.html |

## FAQ

**What voltage powers the LDROBOT STL-27L 25 m dToF Lidar?**

Supply range 4.5–5.5 V.

**How much does the LDROBOT STL-27L 25 m dToF Lidar cost?**

From $160 at www.dfrobot.com. Prices are observed unit prices before tax and shipping.

**What are the LDROBOT STL-27L 25 m dToF Lidar dimensions?**

54 × 46.29 × 34.8 mm. A STEP model is available for enclosure fit checks.

**Where does this LDROBOT STL-27L 25 m dToF 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

- [LDROBOT STL-27L 25 m dToF Lidar datasheet](https://raw.githubusercontent.com/May-DFRobot/DFRobot/master/SEN0589_Datasheet.pdf)
- [www.dfrobot.com listing](https://www.dfrobot.com/product-2726.html)

## Part graph

### Alternatives (by use case)

- [Slamtec RPLIDAR A1M8 360° Lidar (dev kit)](https://www.xirkit.io/products/slamtec-rplidar-a1m8-360-lidar-dev-kit-0e28) — Both serve slam mapping and navigation — check the trade-offs; $160 vs $99
- [YDLIDAR T-mini Plus 360° ToF Lidar](https://www.xirkit.io/products/ydlidar-t-mini-plus-360-tof-lidar-c0fd) — Both serve slam mapping and navigation — check the trade-offs; $160 vs $85
- [YDLIDAR X4 Pro 360° Triangulation Lidar](https://www.xirkit.io/products/ydlidar-x4-pro-360-triangulation-lidar-b1db) — Both serve slam mapping and navigation — check the trade-offs; $90 vs $160
- [Orbbec MS200K 360° dToF Lidar](https://www.xirkit.io/products/orbbec-ms200k-360-dtof-lidar-86b6) — Both serve slam mapping and navigation — check the trade-offs; $100 vs $160

### Pin-compatible

- [LDROBOT STL-19P 360° dToF Lidar (Waveshare D500 kit)](https://www.xirkit.io/products/ldrobot-stl-19p-360-dtof-lidar-waveshare-d500-kit-d990) — Same LDROBOT 54 × 46.29 mm footprint and ZH1.5T-4P pinout (Tx, PWM, GND, P5V, 4.5–5.5 V); drop-in mechanically and electrically, but the UART runs at 921600 baud instead of 230400 — host code must change baud