diff --git a/sdk/components/sensors/smtp2_v2/smtp2_v2.cpp b/sdk/components/sensors/smtp2_v2/smtp2_v2.cpp
index b6b44ee..d89bbe2 100644
--- a/sdk/components/sensors/smtp2_v2/smtp2_v2.cpp
+++ b/sdk/components/sensors/smtp2_v2/smtp2_v2.cpp
@@ -13,8 +13,8 @@ using namespace smtp2;
 #define OVERTIME 100
 #define DUMP_HEX 1
 
-#define RE_SEND_TIMES 3
-#define RE_SEND_DELAY 800
+#define RE_SEND_TIMES 5
+#define RE_SEND_DELAY 400
 
 // 模式2
 void SMTP2V2::initialize(UART_HandleTypeDef* uart, uint8_t id, DMA_HandleTypeDef* hdma_rx, DMA_HandleTypeDef* hdma_tx) {
@@ -396,7 +396,7 @@ int32_t SMTP2V2::_runaction(bool dump, const char* cmd) {
     if (!_sendcmd(dump, "/1CR\r")) continue;
     if (!_sendcmd(dump, cmd)) continue;
 
-    
+
     return getAckEcode();
   }
   return getAckEcode();