When the alarm keypad is not paired, you can enter pairing mode by reassembling the battery. When the alarm keypad already has a pairing record, you need to unpair the device on APPs, then press and hold the pairing button on the device for 5 seconds. When you see the green light flashing continuously, the alarm keypad has entered pairing mode, and you can operate the app to connect to the RBF network. Another method is to scan the QR code on the alarm keypad to connect to the network.