·Installation Video Guide: • D280 Installation Vide...
·System Initialization/Reset Settings: • D280 System Initializa...
·Register users&Add users: • D280 Register users&Ad...
·Pairing the app with the device: • D280 Pairing the app w...
·Settings of Normally-open Function: • D280 Settings of Norma...
·Volume Settings: • D280 Volume Settings
Bluetooth Gateway:www.amazon.com/dp/B09YHFG933
E-mali: support@arpha.com.