diff --git a/iflytop_canbus_protocol.hpp b/iflytop_canbus_protocol.hpp
index 7b783aa..3211cbd 100644
--- a/iflytop_canbus_protocol.hpp
+++ b/iflytop_canbus_protocol.hpp
@@ -250,7 +250,10 @@ typedef enum {
   /***********************************************************************************************************************
    *                                                 H2O2传感器数值上报                                                  *
    ***********************************************************************************************************************/
-  kreport_h2o2_sensor_data = 750,  // report:subid h2o2_sensor_data
+  kcmd_h2o2_sensor_read_calibration_date = 700,  // cmd:subid ack:year,month,day
+  kcmd_h2o2_sensor_read_sub_ic_errorcode = 701,  // cmd:subid ack:errorcode
+  kcmd_h2o2_sensor_read_sub_ic_reg       = 702,  // cmd:subid,reg,num ack:errorcode
+  kreport_h2o2_sensor_data               = 750,  // report:subid h2o2_sensor_data
 
 #if 0
 
@@ -409,11 +412,12 @@ typedef struct {
 #endif
 
 typedef struct {
-  uint16_t subid;
-  uint16_t h2o2;        // ppm
-  uint16_t humid;       // %RH * 100
-  uint16_t temp;        // °C * 100
-  uint16_t saturation;  // %RS * 100
+  uint8_t  subid;         // 传感器子编号，当且仅当板子上有多个传感器时使用
+  uint8_t  sensor_error;  // 传感器异常
+  uint16_t h2o2;          // ppm * 10
+  uint16_t humid;         // %RH * 10
+  uint16_t temp;          // °C * 10
+  uint16_t saturation;    // %RS * 10
 } report_h2o2_data_t;
 
 #pragma pack()