All our smart fixtures are developed based on the tuya system. You need to connect the smart fixtures to the multitap transformer and turn on/off quickly until the smart fixtures is blinking or breathing, which means they are reset. Download tuya smart in google play or app store, turn on wifi and bluetooth, search for the device according to the control type (wifi or bluetooth) of the smart retaining wall light fixtures on the search devices page, you can connect to the smart fixtures, and the smart fixtures stop blinking or breathing, The devices appears on the phone.