diff --git a/README.md b/README.md
index 41c900c..f1c987e 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ This Library can be freely used by anyone. I will be happy to share a link to th
 - Ohm's Law
 - Temperature if resistance change / Resistance if temperature Change
 - Voltage/Current if switch connection between Star and Triangle
+- PT100/PT1000 resistance to temperature and temperature to resistance
 
 #Meteorology:
 - Transfer Temperature between °C °F °K