diff --git a/app_config.h b/app_config.h
index d0cef16..99234fa 100644
--- a/app_config.h
+++ b/app_config.h
@@ -103,11 +103,41 @@ extern "C"
 #define BLE_ADVERTISING_ENABLED                     1
 
 // BLE device name
+#define DEF_ELITE_DEV                               0x00000000
 #define DEF_ELITE_EDC_20                            0x00020109
 #define DEF_PULSE_E_LOAD_10                         0x00070000
-#define DEF_ELITE_MODEL                             DEF_ELITE_EDC_20
+#define DEF_ELITE_MODEL                             DEF_ELITE_DEV
 
-#if (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
+#if (DEF_ELITE_MODEL == DEF_ELITE_DEV)
+#define ELITE_DEVICE_NAME       "Elite-Dev"
+#define MAJOR_PRODUCT_NUMBER    0
+#define MINOR_PRODUCT_NUMBER    0
+#define MAJOR_VERSION_NUMBER    0
+#define MINOR_VERSION_NUMBER    0
+
+#define DEF_LED_COUNT           0
+#define DEF_LED_DRV_ENABLED     0
+#define DEF_APA102_2020_ENABLED 0
+
+#define DEF_ADC_DRV_ENABLED     0
+#define DEF_ADS8691_ENABLED     0
+#define DEF_BULTIN_ADC_ENABED   0
+
+#define DEF_DAC_DRV_ENABLED     0
+#define DEF_MAX5136_ENABLED     0
+
+#define DEF_SW_DRV_ENABLED      0
+#define DEF_ADGS1412_ENABLED    0
+
+#define DEF_FS_ENABLED          0
+#define DEF_FS_RTT_DIR          0
+#define DEF_GD25D10C_ENABLED    0
+
+#define DEF_BTN_ENABLED         0
+
+#define DEF_RTT_JSCOP_ENABLED   0
+
+#elif (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
 #define ELITE_DEVICE_NAME       "Elite-EDC"
 #define MAJOR_PRODUCT_NUMBER    0
 #define MINOR_PRODUCT_NUMBER    2
diff --git a/bmd380_peripheral.vcxproj b/bmd380_peripheral.vcxproj
index 4338378..d269a75 100644
--- a/bmd380_peripheral.vcxproj
+++ b/bmd380_peripheral.vcxproj
@@ -187,6 +187,7 @@
     <ClCompile Include="btn.c" />
     <ClCompile Include="elite_board.c" />
     <ClCompile Include="dac_drv.c" />
+    <ClCompile Include="elite_dev.c" />
     <ClCompile Include="fs.c" />
     <ClCompile Include="gd25d10c.c" />
     <ClCompile Include="max5136.c" />
@@ -371,6 +372,7 @@
     <ClInclude Include="elite_dac.h" />
     <ClInclude Include="elite_correction.h" />
     <ClInclude Include="elite_board.h" />
+    <ClInclude Include="elite_dev.h" />
     <ClInclude Include="FreeRTOSConfig.h" />
     <ClInclude Include="elite_def.h" />
     <ClInclude Include="builtin_saadc.h" />
diff --git a/elite.c b/elite.c
index 9ef26b9..b4b3ddf 100644
--- a/elite.c
+++ b/elite.c
@@ -1,6 +1,8 @@
 #include "elite.h"
 
-#if (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
+#if (DEF_ELITE_MODEL == DEF_ELITE_DEV)
+#include "elite_dev.h"
+#elif (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
 #include "edc.h"
 #elif (DEF_ELITE_MODEL == DEF_PULSE_E_LOAD_10)
 #include "pel.h"
@@ -96,7 +98,9 @@ static void elite_instr_task(void *p_arg)
 
 void elite_init(void)
 {
-#if (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
+#if (DEF_ELITE_MODEL == DEF_ELITE_DEV)
+    p_instance = dev_init();
+#elif (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
     edc.init();
     p_instance = edc.p_elite_instance;
 #elif (DEF_ELITE_MODEL == DEF_PULSE_E_LOAD_10)
diff --git a/elite_board.h b/elite_board.h
index f818b97..6ef3dd9 100644
--- a/elite_board.h
+++ b/elite_board.h
@@ -3,7 +3,8 @@
 #define __BOARD_H__
 
 #include "app_config.h"
-#if (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
+#if (DEF_ELITE_MODEL == DEF_ELITE_DEV)
+#elif (DEF_ELITE_MODEL == DEF_ELITE_EDC_20)
 #include "edc20_io.h"
 #elif (DEF_ELITE_MODEL == DEF_PULSE_E_LOAD_10)
 #include "pel10_io.h"
diff --git a/elite_dev.c b/elite_dev.c
new file mode 100644
index 0000000..03b44cb
--- /dev/null
+++ b/elite_dev.c
@@ -0,0 +1,75 @@
+#include "elite_dev.h"
+
+#include "nrf_log.h"
+
+#if (DEF_ELITE_MODEL == DEF_ELITE_DEV)
+
+#define VERSION_DATE_YEAR   24
+#define VERSION_DATE_MONTH  5
+#define VERSION_DATE_DAY    30
+#define VERSION_DATE_HOUR   22
+#define VERSION_DATE_MINUTE 20
+static void cis_version(uint8_t *ins, uint16_t size)
+{
+    NRF_LOG_INFO("%s", __FUNCTION__);
+    uint8_t cis_ver[] = {
+        CIS_VERSION,
+        VERSION_DATE_YEAR,
+        VERSION_DATE_MONTH,
+        VERSION_DATE_DAY,
+        VERSION_DATE_HOUR,
+        VERSION_DATE_MINUTE,
+    };
+    extern ret_code_t le_data_upadate(uint8_t * p_value, uint16_t len);
+    le_data_upadate((void *)cis_ver, sizeof(cis_ver));
+}
+
+static void vis_rst(uint8_t *ins, uint16_t size)
+{
+    NRF_LOG_INFO("%s", __FUNCTION__);
+}
+
+#define MAGIC_NUM 0xFF00
+static void dev_mode(uint8_t *ins, uint16_t size)
+{
+    NRF_LOG_INFO("%s", __FUNCTION__);
+    struct __PACKED
+    {
+        uint8_t id     : 4;
+        uint8_t        : 4;
+        uint16_t magic : 16;
+        uint8_t opcode;
+        uint8_t param[];
+    } *p_ins = (void *)ins;
+
+    if (p_ins->magic != MAGIC_NUM)
+    {
+        return;
+    }
+
+    // TODO...
+    switch (p_ins->opcode)
+    {
+        default:
+            break;
+    }
+}
+
+const elite_instance_t pel_elite_instance = {
+    .cis_func = {
+                 [CIS_VERSION] = cis_version,
+                 },
+    .vis_func = {
+                 [VIS_RST] = vis_rst,
+                 },
+    .ris_func = {
+                 [DEV_MODE] = dev_mode,
+                 }
+};
+
+const elite_instance_t *dev_init(void)
+{
+    return &pel_elite_instance;
+}
+
+#endif /* !DEF_ELITE_MODEL */
diff --git a/elite_dev.h b/elite_dev.h
new file mode 100644
index 0000000..d3967b1
--- /dev/null
+++ b/elite_dev.h
@@ -0,0 +1,10 @@
+#pragma once
+#ifndef __ELITE_DEV_H__
+#define __ELITE_DEV_H__
+
+#include "app_config.h"
+#include "elite.h"
+
+const elite_instance_t *dev_init(void);
+
+#endif // !__ELITE_DEV_H__