diff --git a/custom_components/aurora_solar/const.py b/custom_components/aurora_solar/const.py
index 96f56a9..5aed512 100644
--- a/custom_components/aurora_solar/const.py
+++ b/custom_components/aurora_solar/const.py
@@ -1,4 +1,6 @@
 DOMAIN = "aurora_solar"
 CONF_HOST = "host"
 CONF_PORT = "port"
+CONF_SLAVE_ID = "slave_id"
 DEFAULT_PORT = 5000
+DEFAULT_SLAVE_ID = 2  # Standard-Slave-ID
\ No newline at end of file