diff --git a/components/sensors/smtp2_v2/smtp2_v2.cpp b/components/sensors/smtp2_v2/smtp2_v2.cpp
index f8a1568..2654eda 100644
--- a/components/sensors/smtp2_v2/smtp2_v2.cpp
+++ b/components/sensors/smtp2_v2/smtp2_v2.cpp
@@ -11,7 +11,7 @@ using namespace smtp2;
 #define TAG "SMTP2"
 
 #define OVERTIME 100
-#define DUMP_HEX 1
+#define DUMP_HEX 0
 
 #define SEND_CMD(fmt, ...)                         sendcmd(true, 1, "/1" fmt "R\r", ##__VA_ARGS__);
 #define SEND_CMD_AUTO_RETRY(retry_times, fmt, ...) sendcmd(true, retry_times, "/1" fmt "R\r", ##__VA_ARGS__);