Born from high-altitude balloon development,
the industry’s smallest and lightest class ultrasonic anemometer.
85 g (BASIC)
91 g (M5B)
ULSA Startup Guide
For information on the minimum setup required for the measurement Please click here.
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54 mm (Excluding M-BUS terminal height)
HP Multi-Jet Fusion PA12
Electrical Spec. *1
USB microB / JST ZH /
4800 / 9600 / 19200 / 38400 / 57600 / 115200 bps
USB microB / JST ZH
Measurement Spec. *1
1 / 2 / 5 / 10 Hz
※Rate selectable only at
CSV / List View /
Wind Velocity:0.01 m/s
Wind Direction:1 °
Virtual Temperature:0.01 ℃
Wind Velocity:0~20 m/s
Wind Direction:0~359 °
Wind Velocity:±5 %rdg.
Wind Direction:±1 °
Virtual Temperature:±2 ℃ (*2)
*1 – Specifications are subject to change without notice.
*2 – It is a virtual temperature derived from the speed of sound, and due to the influence of factors such as air pressure and humidity, it differs from the actual temperature.
The technical specifications of ULSA, as well as precautions for use, are documented.
ULSA 3D model
You can download the 3D reference model of ULSA for external dimensions.
This allows you to import it into CAD or visualize the size using AR.
STEP / STL / USDZ
Demo for M5Stack
This is the installation procedure for the M5Stack Core2 anemometer demo firmware that docks with ULSA M5B.
You can quickly test the anemometer function.
Firmware for ULSA
We provide firmware updates for ULSA BASIC / M5B to improve functionality and fix bugs.
Inquiries & FAQ
For inquiries about ULSA or initial defects, please contact us using the form below.
After receiving the product, we only accept exchanges for initially defective items. Please make a claim within 14 days of receipt.
*Response is typically provided within 5 business days
ULSA is an acronym derived from the UltraSonic Anemometer, an ultrasonic wind direction and speed meter.
ULSA is a technology born during the research and development of gliding recovery balloons in STRATOVISION. By purchasing ULSA, STRATOVISION can continue its journey towards the development of new balloon technologies.
ULSA M5B / BASIC is not waterproof. Please use it indoors or temporarily outdoors under clear weather conditions (avoid using it in outdoor applications during rainy weather).
Examples: drone mounting, indoor airflow measurement, etc.
There is a 1/4-20 UNC screw on the bottom surface. You can mount and install it using your camera tripod.
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