I have 2 contact sensors by Xiaomi that at perfect. I added 2 more and HE didn't like it. I was considering getting rid myself
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Just corrected the above. 10 Iris contacts coming, not 120 
Hi Roy.
Have you used both of these devices before and what is your experience with them.
Also, are you getting them from the guy in the US that sells them on Ebay.
Are these the 3320-L?
I'd be interested know how they are and who you r getting them, the aqua are OK only bug I have is lux reporting seems to go to sleep with no motion
They are yes (3320-L ), although will arrive without magnets (no biggie).
They still have some left.
The motion sensors work really well. Have very little to no issues apart from them being yet another battery to store (CR2). So I'm hoping the contacts are the same 
The motion sensors don't have LUX on them, but do have Temp.
But they do flash when motion is triggered, which led to an altercation in the bedroom. I found one on the floor one morning, and a shoe close by. And it wasn't my shoe!
So I opened it up, black insulation tape added, and its now back in place 
They do flash quite brightly in a dark room.
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