diff --git a/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_sensor.c b/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_sensor.c
index 07e8590..84379ae 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_sensor.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/command/handlers/cmd_sensor.c
@@ -2,14 +2,13 @@
  * cmd_sensor.c - Sensor measurement handlers
  *
  * msn? -> rsn:  battery ADC measurement
- * mso? -> rso:  TMP235 temperature reading
+ * mst? -> rso:  IMU die temperature reading
  * msp? -> rsp:  IMU 6-axis single read
  * all_sensors()  bulk-measurement helper used by the mbb? handler
  *============================================================================*/
 
 #include "cmd_common.h"
 #include "cmd_sensor.h"
-#include "dr_piezo.h"
 
 /*==============================================================================
  * msn? -> rsn:  Battery level ADC measurement
@@ -25,34 +24,23 @@ int Cmd_msn(const ParsedCmd *cmd)
 }
 
 /*==============================================================================
- * mst? -> rso:  Temperature with piezo power cycle
+ * mst? -> rso:  IMU die temperature
  *
  * Request:  [TAG 4B "mst?"] [CRC 2B]
  * Response: [TAG 4B "rso:"] [temp_x100 2B BE] [CRC 2B]
- *
- * TMP235 shares the piezo TX/RX power rail. This command handles the full
- * sequence: power ON -> measure -> power OFF, so the caller doesn't need
- * to send mpa?/mpb? separately.
- * Response is sent from the TMP235 SAADC callback (tmp235_voltage_handler).
  *============================================================================*/
 int Cmd_mst(const ParsedCmd *cmd)
 {
-    uint32_t timeout_cnt;
+    uint16_t imu_temp_x100 = 0xFFFF;
     (void)cmd;
 
-    if (!dr_piezo_is_power_on())
+    if (imu_read_temperature_x100(&imu_temp_x100, NULL) != 0)
     {
-        dr_piezo_power_on();
+        imu_temp_x100 = 0xFFFF;
     }
 
-    tmp235_saadc_done = false;
-    tmp235_voltage_level_meas();
-    for (timeout_cnt = 0; !tmp235_saadc_done && timeout_cnt < 100; timeout_cnt++)
-    {
-        dr_sd_delay_ms(1);
-    }
-
-    dr_piezo_power_off();
+    single_format_data(ble_bin_buffer, "rso:", imu_temp_x100);
+    dr_binary_tx_safe(ble_bin_buffer, 3);
 
     return 1;
 }