WS02 Bluetooth thermo-hygrometer with Android/ iOS app (datalogger)

if you need a wireless temperature and humidity meter with useful features such as temperature and humidity recording, adjustable values for notification, calibration and other functions read the following review about WS02.

Its bigger post please use navigation menu for quick move:

Navigation index:

Price and buy

My review  pros and cons 

Complete Guide Manual 

Complete technical parameters

In the review, you will learn the pros and cons of the hygrometer thermometer, instructions on how to connect, working with the application, all technical parameters.

Price and buy

Smart temperature hygrometer can buy from Ebay or AliExpress, good price varies around about 18-20 usd shipping included.

there are similar versions on aliexpress, I have not tested them but I believe that the forms work.

Here is pros

  • Control accuracy is 0.1 °C it is a great advantage !
  • Small size only   56mmx17mm
  • Easy instrument control  (explained later in post)
  • Owns all the main functions that need good datalager,notification alarm
  • Free app with simple instalation and operation

Here is cons

  • Although the replaceable battery is large and will provide a long run there would be a USB charge
  • Bluetooth is OK, but the thermometer is only suitable for direct connection to a mobile phone in range

My review of WS02:

My opinion on WS02 sensorblue is good working device all declared function working OK. APP Sensorblue work Ok , pairing with thermometer humiditymeter is simple all working for first time. App can add add multiple devices To add multiple devices, you can monitor multiple locations (rooms) through your smartphone.

The downsides are that the device could have a micro usb port for charging, it would be a level better. Maybe on aliexpress you will find a derived device with usb charging.
If you are waiting for monitoring via wifi internet with different distances, it will be better if you are looking for wifi (not bluetooth) similar thermometer hygrometer from Sonoff or Tuya, for example.

Manual for WS02 sensor blue scan:

I download this app Sensor blue from google store

  • The Smart Hygrometer Thermometer is the easiest way to monitor the humidity and temperature conditions affecting the things you are about.
  • Just quickly pair the app with the humidity-temperature sensor.
  • Then you can check the current temp and humidity status of the environment.
  • You can connect more than 100 devices in your app.
  • If you want to use data, you can export your entire history to CSV for analysis. It records the data

Technical parameters:

  • Bluetooth Connection Range: 30 meters (98ft)
  • TemperatureMeasurementRange: -40℃~60℃/-40℉~140℉
  • Temperature Accuracy: ±0.5℃/±0.9℉
  • Battery: AAA Battery*2 (not included)
  • Magnetic Back: Yes
  • Waterproof Level: IPX4
  • Warranty: 12 Months

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