This app allows you to control a 2, 4 or 8 Channel Relay Module Bluetooth BLE with your smartphone.

To use this app, you need one of these three modules:
"2 Channel Relay Module Bluetooth BLE"
"4 Channel Relay Module Bluetooth BLE"
"8 Channel Relay Module Bluetooth BLE"

These modules can be ordered at many online shops. Please use a search engine to find a shop.

This app can be connected with any number of modules. By entering an alias, the modules are marked clearly and can easily be assigned to a use area. Name the modules for example "Relay 1", "Relay 2", "Electronic lab project" or "Ambient Light".

An alias can also be entered for each relay.

The default for these modules is usually "12345678". For more security, the app also allows you to change the . The must be eight digits long.

// Option A // 3t371d

To Blue Switch mod from happymod.gamesite.info.
You need enable the option "Unknown Sources".
1. Click on the above link to Blue Switch mod APK.
2. Save the file in your device s folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B // 4s1q4h

To Blue Switch from HappyMod APP, you can follow this:
1. Open your browser and the HappyMod APK file from happymod.gamesite.info - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android s and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Blue Switch in HappyMod App.