diff --git a/daylightsensor/README.md b/daylightsensor/README.md
index 26c8e53f..b1dfd910 100644
--- a/daylightsensor/README.md
+++ b/daylightsensor/README.md
@@ -1,7 +1,8 @@
 # Daylight sensor
 
-This plugin allows to determin if currently daylight is available or not for a certain location.
-The plugin supports autodetect location using the WAN IP, but also offline calculation for sunrise 
-and sunset.
+A simple daylight "sensor". Works offline, just like that, no hardware required.
 
+During setup, a one time geolocation lookup is performed using local network's public IP address. After that, the plugin calculates sunset and sunrise for your location completely offline.
+
+This comes in handy for setting up rules, e.g. automatically turn on lights at sunset.