|power outage memory|
Confirmed working with
Long press the button until the blue light starts to rapidly blink
Pairing InstructionsPress and hold the button on the device until the blue light starts blinking, release it and the pairing should begin.
If you're having problems pairing, try keeping the device alive (press the button every second) after pairing started, until pairing completed (source: ZHA with Zigate and Aqara device).
If you're having connection or pairing issues read Xiaomi & Aqara Devices - Pairing & Keeping them connected.