2 handheld automatic weather stations, what's the difference?

There are 2 types of handheld automatic weather stations, one is a traditional mechanical wind speed and direction instrument, and the other is a handheld weather station based on the principle of ultrasound.

Let's look at the mechanical anemometer first:

Model: FT-SQ5

This equipment adopts mechanical wind speed and wind direction cup, about 0.5Kg, the overall size of 405mm×100mm×100mm, easy to carry, easy to operate, in addition to collecting wind speed and wind direction data, you can also collect temperature, humidity, air pressure and other elements. It has a built-in memory chip that can store 40,000 pieces of data, and uses USB interfaces and data cables to download weather data to a computer. The system voice is set to switch between Chinese and English, and is powered by three five batteries.

Take a look at the ultrasonic handheld weather station:

Model: FT-SQ5A

This device uses the time difference between ultrasonic waves in the air to measure wind speed, wind direction, in addition to measuring air temperature, humidity, atmospheric pressure, wind speed, wind direction, altitude (optional). It has a display screen that displays weather parameters in real time. The overall appearance of the device looks like a flashlight, the handle design is very convenient for users to use, and its weight is only 0.85kg, the volume is easy to carry. The material is made of ASB plastic, which is durable, resistant to wear and corrosion.

Ultrasonic handheld weather station built-in Bluetooth module (output specification BLE4.0), can be connected with the mobile phone, the manufacturer provides supporting APP software, so that users can view the data on the mobile APP, quite convenient. Internal storage of 365 days of monitoring data, using removable standard 18650 rechargeable lithium battery power (factory standard with one battery, up to three can be installed). According to the experimental records, the instrument can work continuously for 24 hours under a fully charged state (1 18650 lithium battery).