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HWT901B AHRS Triaxial Accelerometer Gyroscope Angle Magnetic Digital Electronic Compass Vibration Air Pressure Altitude Sensor

1-99 Pieces
100-499 Pieces
500-999 Pieces
>=1000 Pieces
Min. Order
1 Piece
Choose your specifications
Company Information

WitMotion ShenZhen Co., Ltd.

CN Manufacturer
Response Time
Response Rate:
US$ 10,000+
2 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Place of Origin: Guangdong China
Brand Name: WitMotion
Model Number: HWT901B
Usage: Acceleraiton Angle Angular Velocity Magnetic Field Air Pressure Height
Theory: Acceleraiton Angle Angular Velocity Magnetic Field Air Pressure Height
Output: Digital Sensor
Acceleration Output: Yes
Angle Output: Yes
Gyroscope Output: Yes
Angular Velocity Output: Yes
Magnetic Field Output: Yes
Air Pressure Output: Yes
Height Output: Yes
Selling Units: Single item
Single package size: 15X15X5 cm
Single gross weight: 0.155 KG
Package Type: 0 ,Pay Attention:Default Shipping Interface Type(Serial port --TTL) 1,The single piece of electronic product will be packaged in a protective case to prevent crushing. 2,The built-in foam board is anti-vibration, or it is packaged in an electrostatic bag to prevent static electricity. 3,The outer box will be wrapped with a bubble pad. 4,Our aim is to protect electronic shock and pressure and avoid static electricity.
Product Description

HW901B Attitude Angle Sensor
55mm X 36.8mm X 24mm
Consumption current

Measuring dimensions
Acceleration: X Y Z
Angular Velocity: X Y Z
Attitude angle:X Y Z
Magnetic field:X Y Z
Atmospheric pressure:YES


Acceleration: ± 16g,
Angular velocity: ± 2000 ° / s
Attitude angle:±180°


Acceleration: 0.01g, 
Angular speed 0.05° / s.

Measurement Accuracy
X Y axis 0.05°, Z axis 1° (magnetic field calibration is
good, and no magnetic field interference).
Data output
Time,  Acceleration, Angular Velocity, Angle, Magnetic field,  Pressure , Height
The data output frequency
0.1Hz to 200Hz
(10Hz default)

Data Interface
Serial (TTL/232 level baud rate support2400,4800,9600(default), 19200, 38400, 57600, 115200, 230400, 460800, 921600)


Default Shipping interface type 
  Serial port --TTL    

Product Feature

1,Module integrates high-precision gyroscopes, accelerometer, RM3100 geomagnetic sensor, high-performance microprocessors and advanced dynamics solves dynamic Kalman filter algorithm to quickly solve the current real-time movement of the module attitude.
2,The use of advanced digital filtering technology, can effectively reduce the measurement noise and improve measurement accuracy.
3,Integrates gesture solver, with dynamic Kalman filter algorithm, can get the accurate attitude in dynamic environment, attitude measurement precision is up to 0.05 degrees with high stability, performance is even better than some professional Inclinometer!
4,Integrate voltage stabilization circuit, working voltage is 3.3v ~ 5v, pin level compatible 3.3V and 5V embedded system .
5,Supports serial port TTL/232 digital interface, Serial port rate is adjustable from 2400kbps ~ 921600 kbps(9600 default)
6,Highest 200Hz output data rate. The output data and rate can be adjusted.
7,4layer PCB technology, thinner, smaller, and more reliable.

The advantage of HWT901B show as below.

The instructions of HWT901B shows as below.

Connection method:
1,Line Color Function
2,232 Level Connection:Connecting to a computer requires a USB to 232 serial port module.
3,TTL Level Connection
Connecting module with USB -TTL:
VCC TX RX GND of the module connected to +5/3.3V RX TX GND of the serial module respectively. It is noteworthy that TX and RX need to be crossed, which is TX connected to RX, RX connected to TX.

Computer PC test

The data of the APP shows as below:

The data of the PC software shows as below:

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Online Motor Program Editor, Custom Action Sequences.

Our Company

Why choose WitMotion?

Whether your applications requirements are size or performance, you will find a suitable AHRS at WitMotion

WitMotion is a fast growing supplier of miniature, high performance and innovative motion sensing solutions. WitMotion is headquartered in Shenzhen, China and operates in America, Europe, Asia from its e-commerce at 
AliExpress and Amazon as below:

WitMotion offers a complete line of inertial sensors, such as Attitude and Heading Reference System (AHRS) or Inertial Measurement Unit (IMU), based on the state of the art MEMS technology.

This technology, combined with advanced calibration techniques offers miniature and low-cost solutions while maintaining a very high performance at every level.

Our sensors are ideal for industrial, research projects including but not limited to
1.  Antenna tracking

2.  Internet of Things
3.  Camera stabilization
4.  Surveying applications
5.  Agricultural Machinery
6.  Construction Machinery

7.  Unmanned vehicle control

8.  Inclinometers For Solar Tracking System
9.  TMS Intelligent Tower Monitoring System

10.Inclinometer For Geotechnical Monitoring System

11.Tilt Sensor & Inclinometer for Ancient Buildings Protection

Q: What is an inertial measurement unit?
A: An inertial measurement unit (IMU) is an electronic device that measures and reports a subject's specific force, angular rate, and sometimes its magnetic field, using a combination of accelerometers, gyroscopes, and magnetometers.

Q: What is an AHRS?
A: Attitude heading reference systems is commonly referred to as AHRS. As the name implies, AHRS is a combination of sensors in one package.

Q: How do I get technical support for my WitMotion products? 
 A: Support Engineers are always available to support you in any way we can by phone, email, SKYPE or Live Chat from our home page. Contact details may be found as below: 
WhatsApp: (+86) 18689491686
WeChat ID: Ja-vin
Skype: live: 1609370741

Q: Where do I get document like manual or data sheet/ APP? 
A: For detailed info, please find brochure, specification sheet and APP at
    For operation demo, please find at below link:

Q: Do you accept trial order? What is the MOQ?
A: We accept sample policy. MOQ is from 2 pcs. 

Q: Can I make custom design of WitMotion products?
A: Customized design is available.  

Q: Which way of payment I can make?
A:  T/T, credit cards like VISA or MasterCard is accepetable. Bank transfer via Trade Assurance Order is preferred. 

Transportation Service

We directly cooperate with FedEx,you can get goods faster and safer.
Other optional express: DHL.
If the quantity is large, we can also transport the goods to you by sea..

Privacy Policy

Our company is a high technology company that integrates research, development, production and sale, and is mainly engaged in the sale of inclinometer sensors, digital compasses, digital dipmeters and acceleration sensors.

And we respect our customers and their privacy, which is why all the information we get from our customers is confidentially kept and not given to any other third party. We ask for certain information from our customers to process our orders and to help us provide them with special offers, newsletters and better Customer Service.

Contact us

We are located in ShenZhen China which provide more convenient transportation and better logistics service for all overseas clients! Integrity and cooperation to jointly occupy the market and promote the development of the industry and Inclinometer, Tilt Switch, Accelerometer ,Gyroscope industry as a common mission.