Free trials of WiFi Temperature Sensor now are coming! Video tutorial https://youtu.be/awiW-0gaQds
Would you like to try it for free? If you are interested in it, you just need to pay US$10 for the shipping fee and give us some feedback while using it.
Note: Limited to 1 piece/person!
Cost: Free (Free trial version)
Shipping Fee: US$10
System Overview