diff --git a/src/ES32A08.h b/src/ES32A08.h
index 0a80138..06593eb 100644
--- a/src/ES32A08.h
+++ b/src/ES32A08.h
@@ -18,6 +18,12 @@
 #define CLK165_PIN 17
 #define DATA165_PIN 5
 
+
+//RS485 pins
+#define RS485_RX 3
+#define RS485_TX 1
+#define RS485_RD 22
+
 // ######### USER CONFIG REGION ###########################################
 
 #define RESET_RELAY_ON false // State of the relays at boot