Specifications:
The Calypso Ultrasonic Portable device features four ultrasonic transducers for power sensing. It has a diameter of 70 mm and a height of 57 mm, with a 16mm (M16x2) female thread. The device weighs 135 grams and is compatible with various mounting adapters including tripod, Go-Pro, mast mount, and poles.

Environmental and Measurement Capabilities:
The device is designed for easy mounting and provides wind speed and direction measurements. It has a wind speed range of 0-25 m/s with an accuracy of 0.1 m/s at 10 m/s and a threshold of 1 m/s. Wind direction is measured within a range of 0-359º with an accuracy of ±1º. The device is IP68 rated and operates within a temperature range of -15 to 60º C, provided there is no frost.

Power and Autonomy:
Equipped with a solar panel and internal battery, the device features automatic power management. It can operate in sleep mode for up to 1 year without sunlight and up to 90 days while measuring.

Materials and Mounting Accessories:
The device is constructed with aluminum and carbon fiber poles. It includes mounting accessories such as a mast mount, tripod screw, and GoPro screw.

Data Output and Compatibility:
The sample rate is 1 Hz, with options for 4 and 8 Hz available upon request. Output units include m/s, knots, or km/h, and data is transmitted via Bluetooth version 5.0 with a range of up to 50 meters in open space. The device is compatible with various marine and meteorological applications such as Calypso Instruments Sailing Anemotracker, Weather4D, and others.