# Is there a way to calibrate ambient light sensors

**URL:** <https://community.homey.app/t/is-there-a-way-to-calibrate-ambient-light-sensors/127734>\
**Category:** Questions & Help\
**Tags:** homey-pro\
**Created:** [January 14, 2025, 7:23pm UTC](https://community.homey.app/t/is-there-a-way-to-calibrate-ambient-light-sensors/127734 "2025-01-14T19:23:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [January 14, 2025, 9:20pm UTC](https://community.homey.app/t/is-there-a-way-to-calibrate-ambient-light-sensors/127734/2 "2025-01-14T21:20:04Z")

</div>

I’ve noticed this is (very) sensor dependent, and in general nowhere near real lux values (but I use cheap crap). The max lux of Sensor A = 80000, sensor B = 150 …  
Some apps provide for calibration (Aqara), it’s not in general.

I decided to just use the sensor’s specific lux values, or the mean value of several combined:

You could consider creating a grouped light sensor, in order for you to work with one general mean lux value.

You can use an [advanced virtual device](https://community.homey.app/t/43287):  
Settings:

 ![1000041443](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/3/9384bdee521e3351373ac07d92f5d5708b4b5ca6.jpeg)

Result:

 ![1000041447](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/b/9/b90b2c8687c7c8ee5ea55ed81f71d9619c109ad7.jpeg)

---

_[View the full topic](https://community.homey.app/t/is-there-a-way-to-calibrate-ambient-light-sensors/127734)._