diff --git a/occ_pass_through.hpp b/occ_pass_through.hpp
index a28eb6a..0c01ae4 100644
--- a/occ_pass_through.hpp
+++ b/occ_pass_through.hpp
@@ -1,6 +1,11 @@
 #pragma once
 
+#include "occ_command.hpp"
+
+#include <fmt/core.h>
+
 #include <org/open_power/OCC/PassThrough/server.hpp>
+#include <phosphor-logging/log.hpp>
 #include <sdbusplus/bus.hpp>
 #include <sdbusplus/server/object.hpp>
 #include <string>
@@ -23,6 +28,7 @@
 {
   public:
     PassThrough() = delete;
+    ~PassThrough() = default;
     PassThrough(const PassThrough&) = delete;
     PassThrough& operator=(const PassThrough&) = delete;
     PassThrough(PassThrough&&) = default;
@@ -34,17 +40,18 @@
      */
     PassThrough(sdbusplus::bus::bus& bus, const char* path);
 
-    ~PassThrough()
-    {
-        closeDevice();
-    }
-
-    /** @brief Pass through command to OCC
+    /** @brief Pass through command to OCC from dbus
      *  @param[in] command - command to pass-through
      *  @returns OCC response as an array
      */
     std::vector<std::int32_t> send(std::vector<std::int32_t> command) override;
 
+    /** @brief Pass through command to OCC from openpower-occ-control
+     *  @param[in] command - command to pass-through
+     *  @returns OCC response as an array
+     */
+    std::vector<std::uint8_t> send(std::vector<std::uint8_t> command);
+
   private:
     /** @brief Pass-through occ path on the bus */
     std::string path;
@@ -58,12 +65,12 @@
      */
     std::string devicePath;
 
+    /** @brief OCC instance number */
+    int occInstance;
+
     /** @brief Indicates whether or not the OCC is currently active */
     bool occActive = false;
 
-    /** brief file descriptor associated with occ device */
-    int fd = -1;
-
     /** @brief Subscribe to OCC Status signal
      *
      *  Once the OCC status gets to active, only then we will get /dev/occ2
@@ -71,11 +78,8 @@
      */
     sdbusplus::bus::match_t activeStatusSignal;
 
-    /** Opens devicePath and populates file descritor */
-    void openDevice();
-
-    /** Closed the fd associated with opened device */
-    void closeDevice();
+    /** @brief Object to send commands to the OCC */
+    OccCommand occCmd;
 
     /** @brief Callback function on OCC Status change signals
      *