Does anyone use and can recommend a specific Vibration Sensor that works with ewelink?
Example Sensor Type… Zigbee Smart Vibration Motion Detection|Door Window Alarm Sensor – MOES
I haven’t used it, but here one looks better than the other with one antenna.
https://www.jumia.com.ng/generic-ewelink-wireless-smart-vibration-detector-anti-lost-warning-212802382.html
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I can tell you one that doesn’t work with either the Zigbee Bridge (not Pro) and the iHost. Haven’t tested the Zigbee Bridge Pro but I doubt it. It’s the Aqara Smart Vibration Sensor. The square one with rounded corners and the zig zags on it. Connects fine to a Sonoff USB dongle attached to a Raspberry Pi and Zigbee to Home Assistant though. I am doubtful one exists because Sonoff do no have their own version.
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I’m thinking about something for the door to detect impacts or movement of the door. I have opening and PIR sensors, but I was thinking about adding something that would detect a hit on the door. 
I read various opinions about these sensors and many people complain about very poor sensitivity.
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In my opinion, get some other brand that is proven, make a scene for a device of the same brand, and let it manage eWelink. I think you have already understood how I am doing as there is no other solution, and I want it to be on eWelink
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Do you recommend anything specific?
I have not used such smart sensors. Just search the internet for comments.
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The Aqara square with rounded edges and zigzag lines do okay for my use (attached to a vacuum robot and using Zigbee2MQTT). Suspect that’s more movement than you want though. Haven’t tried attaching them to windows though.
Basically vacuum robots set off all my motion and presence sensors so if it’s moving around I ignore them.
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What if you look for devices from Smartwise they have a vibration sensor and it work with eWelink!
https://smartwise.eu/products/smartwise-vibration-glass-break-sensor-sonoff-compatible-rf-wireless-copy/
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I used the aquara and it wouldn’t connect to the Sonoff iHost or the Zigbee bridge
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Third Reality makes one that needs the Third Reality bridge. You can then use Alexa to bridge between the vibration sensor and devices installed in ewelink. I stopped my testing though when my vibration sensor kept losing contact with the bridge sitting 6’ away.
The vibration sensor has 3 settings. All are too sensitive in my opinion. My concern in your case would be gusts of wind setting it off.
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Last evening I ordered a Smartwise vibration sensor and I want to place it in my car wich is always parked on the
road in front of my house and is in the range of one of me RF bridge. I want to set up a scene wich will send messages when someting will touch, I mean harder, there are quite a few of scratches on it.
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I have a RF vibration sensor which works perfectly with the RF bridge. The range response with RF is better than a Zigbee sensor that I tried while the sensitivity can be adjusted.
In my case I also paired it directly to a door chime
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Do you have a link or the full name of this sensor?
The manufacturer is Wolf-guard Security Hi-tech Co LTD but unfortunately my link on Aliexpres is dead now, so you’ll have to search.
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It seems quite logical that we might see a Sonoff branded Zigbee vibration sensor soon, ideally with sensitivity settings. It would be a great addition to any security system and can’t be too challenging for the development team to building into the portfolio.
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