diff --git a/README.md b/README.md
index d7aecc9..5649c76 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ github.com/goburrow/modbus (to enable working with Sungrow's "encryption").
 This is part of my own custom solar monitoring setup, so has a few quirks suited
 to me. In particular, it exports the necessary tariff values to compute
 import cost and export value - if you are using Aurorar Tariff 93 in Tasmania.
+It defaults to connecting to the IP address of the inverter on my home network.
 
 > :warning: There is ABSOLUTELY NO WARRANTY provided with this code. If for
 > whatever reason it blows up your inverter, THAT'S ON YOU.