Free
About
This is the APP for Tinysine TSTR series Bluetooth relay board.The TSTR series relay board have an OLED display and 4 temperature sensor input ports. It can be controlled by our phones via Bluetooth or WiFi,you can also set 4 threshold value to let the corresponding relay ON/OFF related with the temperature.
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What's New in TSTR WiFi
3.0
March 3, 2026
Add support for iOS26
