diff --git a/Sensor-Configuration.md b/Sensor-Configuration.md
index 09fc6f79..6b98f97e 100644
--- a/Sensor-Configuration.md
+++ b/Sensor-Configuration.md
@@ -75,3 +75,8 @@ You can add a device using the following (MQTT) commands:
 5. ``gpio14 7`` - select WS2812 led string (Wait for the restart)
 
 For some devices a power cycle of Sonoff is needed to reset the interface to the devices just configured.
+
+## additional Ressources
+
+A good summary and comparsion for available sensors:
+[https://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.html](https://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.html)