Recommendation for a good but cheap light / lumens sensor

I am looking for the best light sensor or lumens sensor I am not sure what is called. So basicaly when the light drops the lights will turn on or change the intesnsity. When is really dark to be at like 30% and when its brighter to be at 50% and when the ambien lights is high to get to like 25% or even stop the lights and etc. I want it to be Zigbee with a battery. Thank you.

I use one of these in my bathroom to decide how bright the lights should be throughout the day. They seem to be hard to get hold of these days but Aqara does a similar model which is about £20, I only paid about £7 for the older one but Xiaomi/Aqara devices are generally more expensive now they’ve become a mainstream brand.

Thank you. I found them for £10 in a local shop, so at least I know now that they work good. Thank you for your help :slight_smile: