diff --git a/src/service/device_io_service.cpp b/src/service/device_io_service.cpp
index 387f48d..0060604 100644
--- a/src/service/device_io_service.cpp
+++ b/src/service/device_io_service.cpp
@@ -7,8 +7,9 @@ using namespace iflytop;
 using namespace core;
 using namespace std;
 
-const static int ksubboarddeviceid = 0x01;
-const int        kovertime         = 33;
+const static int ksubboarddeviceid     = 0x01;
+const int        kovertime             = 33;
+const int        ktemperature_overtime = 1200;
 
 #define EXEC_MODBUS(exptr)                                                                                          \
   int ret = exptr;                                                                                                  \
@@ -103,7 +104,7 @@ DeviceIOService::env_sensor_state_t DeviceIOService::getEnvSensorState() {
   59(16Byte)  | light_intensity           H
   60(16Byte)  | light_intensity           L
   */
-  EXEC_MODBUS(modbusMaster->modbus03(ksubboarddeviceid, 48, 13, modbus03rx, kovertime));
+  EXEC_MODBUS(modbusMaster->modbus03(ksubboarddeviceid, 48, 13, modbus03rx, ktemperature_overtime));
   env_sensor_state.wind_speed           = modbus03rx.getReg(48);
   env_sensor_state.wind_direction       = modbus03rx.getReg(49);
   env_sensor_state.temperature          = modbus03rx.getReg(50);
diff --git a/src/service/device_io_service.hpp b/src/service/device_io_service.hpp
index e766330..7a01802 100644
--- a/src/service/device_io_service.hpp
+++ b/src/service/device_io_service.hpp
@@ -60,9 +60,9 @@ class DeviceIOService : public enable_shared_from_this<DeviceIOService> {
 
  public:
   typedef enum {
-    kEmergency,             // 紧急按钮
-    kWaterImmersionSensor,  // 水浸传感器
-    kHumanProximitySensor,  // 人体接近传感器
+    kEmergency,                 // 紧急按钮
+    kWaterImmersionSensor = 5,  // 水浸传感器
+    kHumanProximitySensor = 4,  // 人体接近传感器
   } input_device_type_t;
   class InputDeviceState {
    public: