No success with Aqara sensor and Echo Plus

[Charleysnowy]

Hi, I'm a newbie so please go easy on me!

I can't get my Aqara vibration sensor to pair with Echo Plus. If I'm correct in assuming the Echo Plus has a built in Zigbee hub so I thought this would pair directly.

I've tried the following:
1. Long press on sensor pair switch until led flashes, only flashes twice no matter what I do.
2. Long press on sensor switch and continual pressing on switch while trying to pair.