# WitMotion WT901C TTL 9-Axis AHRS

> WT901C-TTL is a housed 9-axis AHRS with ±16 g acceleration, ±2000 °/s angular-rate measurement and fused Euler/quaternion output over UART TTL at up to 200 Hz. The four-wire interface uses VCC, RX, TX and GND. Supply-voltage and magnetometer-range claims conflict across sources; they remain unresolved rather than being used as compatibility limits.

- Manufacturer: WitMotion
- Part number: WT901C-TTL
- Category: IMUs & motion sensors
- Canonical page: https://www.xirkit.io/products/witmotion-wt901c-ttl-9-axis-ahrs-1500
- Pinout: https://www.xirkit.io/products/witmotion-wt901c-ttl-9-axis-ahrs-1500/pinout
- Structured JSON: https://www.xirkit.io/products/witmotion-wt901c-ttl-9-axis-ahrs-1500/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Sensor type | ahrs |
| Axes | 9 DoF |
| Accelerometer range | 16 ±g |
| Gyroscope range | 2,000 ±°/s |
| Max output data rate | 200 Hz |
| On-chip sensor fusion | Yes |
| Interface | UART TTL |
| Weight | 13 g |
| Dimensions | 51.5 × 36.1 × 15 mm |
| Operating temperature | -40 to 85 °C |

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

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| VCC | J1 · VCC | power in | — | power_in | — | — | — | — | — | — | — |
| RX | J1 · RX | signal | — | rx | — | — | — | — | — | — | — |
| TX | J1 · TX | signal | — | tx | — | — | — | — | — | — | — |
| GND | J1 · GND | ground | — | ground | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.thanksbuyer.com | 31.03 USD | in_stock | 2026-10-09 | https://www.thanksbuyer.com/products/witmotion-wt901c-ttl-9-axis-gyro-inclinometer-for-acceleration-gyroscope-angle-magnetic-field?variant=40940840910897 |

## FAQ

**How much does the WitMotion WT901C TTL 9-Axis AHRS cost?**

From $31.03 at www.thanksbuyer.com. Prices are observed unit prices before tax and shipping.

**What are the WitMotion WT901C TTL 9-Axis AHRS dimensions?**

51.5 × 36.1 × 15 mm. A STEP model is available for enclosure fit checks.

**Where does this WitMotion WT901C TTL 9-Axis AHRS 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

- [WitMotion WT901C TTL 9-Axis AHRS datasheet](https://m.media-amazon.com/images/I/81KVNjp6KjL.pdf)
- [www.thanksbuyer.com listing](https://www.thanksbuyer.com/products/witmotion-wt901c-ttl-9-axis-gyro-inclinometer-for-acceleration-gyroscope-angle-magnetic-field?variant=40940840910897)