--- product_id: 227276049 title: "WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi" price: "€ 86.57" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.be/products/227276049-wt901c-485-mpu9250-high-precision-gyro-accelerometer-angle-magnetometer-9 store_origin: BE region: Belgium --- # RS485 Modbus multi-connect 9-axis sensor fusion Kalman filtering tech WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi **Price:** € 86.57 **Availability:** ✅ In Stock ## Summary > 🧠 Elevate your sensing game with precision that professionals swear by! ## Quick Answers - **What is this?** WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi - **How much does it cost?** € 86.57 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/227276049-wt901c-485-mpu9250-high-precision-gyro-accelerometer-angle-magnetometer-9) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Advanced Sensor Fusion:** Integrated Kalman filtering and dynamic fusion algorithms deliver ultra-stable, low-noise measurements you can trust. - • **Precision Beyond the Norm:** Static accuracy down to 0.05° on X/Y axes ensures rock-solid orientation data for your most demanding projects. - • **Lifetime Support & Warranty:** Backed by 12-month warranty and lifetime customer service, so you’re never left in the dark. - • **Cross-Platform Compatibility:** Plug-and-play with PC, Arduino, and Raspberry Pi—empowering your prototyping and professional builds alike. - • **Seamless Multi-Device Integration:** Supports up to 128 units simultaneously via RS485 Modbus, perfect for scalable industrial or IoT setups. ## Overview The WT901C-485 is a high-precision 9-axis digital compass combining gyro, accelerometer, magnetometer, and inclinometer sensors. Featuring Kalman filtering and RS485 Modbus communication, it delivers stable, low-noise data with static accuracy as fine as 0.05°. Designed for PC, Arduino, and Raspberry Pi integration, it supports multi-unit connections up to 128 devices simultaneously. Despite its advanced tech and lifetime support, user feedback highlights quality control issues, so professional users should weigh reliability against performance. ## Description WitMotion WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi: desertcart.com: Industrial & Scientific Review: Not for the faint of heart - Incomprehensible manual, never achieved connection with an Arduino Review: Horrible Quality Control, ordered two, one failed during testing. This is what I found! - I opened the case and removed the failed part, I don't know why it failed, but there was a little chunk of solder floating around in the case. It also became clear for reasons unknow the manufacture had "tried" to lift off, or scrape off different sections of the copper land. But they left part of it sticking up, soldering very rough on several areas. I don't know why it failed, but very likely the solder chunk shorted out something. ## Features - 【 High Performance 】Rock-solid data output: RS485 Modbus Pitch Roll Yaw (X Y Z axis) Acceleration + Angular Velocity + Angle + Magnetic Field - 【 Robust Design 】X, Y-axis: 0.05° (Static) , X, Y-axis: 0.1° (Dynamic), Long term measurement, Support multi-connection up to 128units simultaneously via WITMOTION PC software or other MCU - 【 WITMOTION Advantage 】8-year Professional Attitude Measuring Solution Provider, sensors integrated R&D dynamic fusion algorithm and Kalman Filtering ensuring stable data output and excellent bias stability, low noise level, increasing measurement accuracy - 【 Worry-free Support 】12-month warranty, lifetime friendly customer service by WitMotion team. Option 1. The tutorial link is printed on the guiding card inside the package. Option 2. search wit-motion(dot)com and download the complete tutorial. Option 3. contact us if you need any help, support (at) wit-motion (dot) com - 【 What You Get 】1 x WitMotion WT901CRS485 Modbus Accelerometer sensor+ 1* 4-PIN Dupont cable +1 x Welcome guide ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 2.3 out of 5 stars 9 Reviews | ## Images ![WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi - Image 1](https://m.media-amazon.com/images/I/51ykVQBycPL.jpg) ## Questions & Answers **Q: we need to connect two inclinometers via a rs 485 converter, what other accessories do we need?** A: Oye, señor o manda, Sí, puede usar nuestro convertidor USB-485 para conectarse con nuestro WT901C-485. Por favor revise el enlace para ordenar. https://www.amazon.es/dp/B07VMFJ5Y3?ref=myi_title_dp Si necesitas cualquier otra ayuda, por favor no dudes en decírmelo. support(at)wit-motion(dot)com Equipo de apoyo **Q: Please confirm the date of delivery to Poland, thank you** A: The date is displayed on the product details page (for reference only), you can also consult Amazon's official customer service. Thank you for your understanding and support. **Q: I'm interested in using this sensor with an Arduino Nano. Are there any arduino libraries or code examples?** A: Instead of the nano I've used SeedStudio XIAO 52840 Sense (Available from Amazon) The Sense version has integrated accelerometers. , BLE, WIFI, and LiPo battery charger. It can be used with Arduino IDE and has sample programs to capture sensor data. **Q: Can this be used with open source flight controllers such as inav or betaflight?** A: Thank you for your question. This requires the adaptation of the protocol. The specific use effect is subject to the actual situation. ## Customer Reviews ### ⭐ Not for the faint of heart *by W***. on April 20, 2025* Incomprehensible manual, never achieved connection with an Arduino ### ⭐ Horrible Quality Control, ordered two, one failed during testing. This is what I found! *by N***S on October 7, 2022* I opened the case and removed the failed part, I don't know why it failed, but there was a little chunk of solder floating around in the case. It also became clear for reasons unknow the manufacture had "tried" to lift off, or scrape off different sections of the copper land. But they left part of it sticking up, soldering very rough on several areas. I don't know why it failed, but very likely the solder chunk shorted out something. ### ⭐ No computer connection. *by J***P on December 6, 2022* Not wireless. Wires dangling out that you have to figure out what to do with them. Useless for me. Just use free cell phone app. I think it can do everything this device might be able to do. Save your money. ## Frequently Bought Together - WitMotion WT901C-485 mpu9250 High-Precision Gyro+Accelerometer+Angle+Magnetometer,9-Axis Digital Compass (Kalman Filtering, Modbus),Triple-Axis Tilt Angle Inclinometer for PC/Arduino/Raspberry Pi - WITMOTION USB to RS485 Modbus RTU UART Converter Cable with CH340 Chip, Terminated by 4 Way Female Socket Header, Serial Adapter (1m/3.28ft, Black), Windows 10,8,7, Linux MAC OS --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/227276049-wt901c-485-mpu9250-high-precision-gyro-accelerometer-angle-magnetometer-9](https://www.desertcart.be/products/227276049-wt901c-485-mpu9250-high-precision-gyro-accelerometer-angle-magnetometer-9) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-17*