Hello
A few of my nighttime automations are based on LUX and they work fairly well, but I want something to use outside. I currently have a xiaomi sensor for lux, but it really isn’t that great for changes in light as it takes too long to register. I did have an Aeotec multi sensor outside but it failed and died.
I could get another but was looking for just LUX/Light and cheap and battery 
Do they exist please?
Cheers
Mark