diff --git a/src/main/java/net/irext/decode/service/businesslogic/DecodeLogic.java b/src/main/java/net/irext/decode/service/businesslogic/DecodeLogic.java
index 7a9e1ea..e3ba88d 100644
--- a/src/main/java/net/irext/decode/service/businesslogic/DecodeLogic.java
+++ b/src/main/java/net/irext/decode/service/businesslogic/DecodeLogic.java
@@ -1,8 +1,10 @@
 package net.irext.decode.service.businesslogic;
 
 import com.squareup.okhttp.*;
+import net.irext.decode.sdk.bean.TemperatureRange;
 import net.irext.decode.service.cache.IDecodeSessionRepository;
 import net.irext.decode.service.cache.IIRBinaryRepository;
+import net.irext.decode.service.model.ACParameters;
 import net.irext.decode.service.model.RemoteIndex;
 import net.irext.decode.service.utils.FileUtil;
 import net.irext.decode.service.utils.LoggerUtil;
@@ -28,6 +30,7 @@ import java.security.MessageDigest;
  * Revision log:
  * 2018-12-08: created by strawmanbobi
  */
+@SuppressWarnings("Duplicates")
 public class DecodeLogic {
 
     private static final String TAG = DecodeLogic.class.getSimpleName();
@@ -96,7 +99,8 @@ public class DecodeLogic {
         return null;
     }
 
-    public int[] decode(RemoteIndex remoteIndex, ACStatus acStatus, int keyCode, int changeWindDirection) {
+    public int[] decode(RemoteIndex remoteIndex, ACStatus acStatus,
+                        int keyCode, int changeWindDirection) {
         int[] decoded = null;
         if (null != remoteIndex) {
             int categoryId = remoteIndex.getCategoryId();
@@ -113,6 +117,34 @@ public class DecodeLogic {
         return null;
     }
 
+    public ACParameters getACParameters(RemoteIndex remoteIndex, int mode) {
+        if (null != remoteIndex) {
+            ACParameters acParameters = new ACParameters();
+            int categoryId = remoteIndex.getCategoryId();
+            int subCate = remoteIndex.getSubCate();
+            byte[] binaryContent = remoteIndex.getBinaries();
+            IRDecode irDecode = IRDecode.getInstance();
+            int ret = irDecode.openBinary(categoryId, subCate, binaryContent, binaryContent.length);
+            if (0 == ret) {
+                int []supportedModes = irDecode.getACSupportedMode();
+                acParameters.setSupportedModes(supportedModes);
+                if (1 == supportedModes[mode]) {
+                    // if this mode is really supported by this AC, get other parameters
+                    TemperatureRange temperatureRange = irDecode.getTemperatureRange(mode);
+                    int[] supportedWindSpeed = irDecode.getACSupportedWindSpeed(mode);
+                    int[] supportedSwing = irDecode.getACSupportedSwing(mode);
+                    acParameters.setTempMax(temperatureRange.getTempMax());
+                    acParameters.setTempMin(temperatureRange.getTempMin());
+                    acParameters.setSupportedWindSpeed(supportedWindSpeed);
+                    acParameters.setSupportedSwing(supportedSwing);
+                }
+            }
+            irDecode.closeBinary();
+            return acParameters;
+        }
+        return null;
+    }
+
     public void close(IDecodeSessionRepository decodeSessionRepository, String sessionId) {
         decodeSessionRepository.delete(sessionId);
     }
diff --git a/src/main/java/net/irext/decode/service/model/ACParameters.java b/src/main/java/net/irext/decode/service/model/ACParameters.java
new file mode 100644
index 0000000..6daa05f
--- /dev/null
+++ b/src/main/java/net/irext/decode/service/model/ACParameters.java
@@ -0,0 +1,72 @@
+package net.irext.decode.service.model;
+
+/**
+ * Filename:       ACParameters.java
+ * Revised:        Date: 2019-02-14
+ * Revision:       Revision: 1.0
+ * <p>
+ * Description:    AC parameters entity
+ * <p>
+ * Revision log:
+ * 2018-12-29: created by strawmanbobi
+ */
+public class ACParameters {
+    private int tempMin;
+    private int tempMax;
+    private int [] supportedModes;
+    private int []supportedWindSpeed;
+    private int []supportedSwing;
+
+    public ACParameters(int tempMin, int tempMax, int[] supportedModes,
+                        int[] supportedWindSpeed, int[] supportedSwing) {
+        this.tempMin = tempMin;
+        this.tempMax = tempMax;
+        this.supportedModes = supportedModes;
+        this.supportedWindSpeed = supportedWindSpeed;
+        this.supportedSwing = supportedSwing;
+    }
+
+    public ACParameters() {
+
+    }
+
+    public int getTempMin() {
+        return tempMin;
+    }
+
+    public void setTempMin(int tempMin) {
+        this.tempMin = tempMin;
+    }
+
+    public int getTempMax() {
+        return tempMax;
+    }
+
+    public void setTempMax(int tempMax) {
+        this.tempMax = tempMax;
+    }
+
+    public int[] getSupportedModes() {
+        return supportedModes;
+    }
+
+    public void setSupportedModes(int[] supportedModes) {
+        this.supportedModes = supportedModes;
+    }
+
+    public int[] getSupportedWindSpeed() {
+        return supportedWindSpeed;
+    }
+
+    public void setSupportedWindSpeed(int[] supportedWindSpeed) {
+        this.supportedWindSpeed = supportedWindSpeed;
+    }
+
+    public int[] getSupportedSwing() {
+        return supportedSwing;
+    }
+
+    public void setSupportedSwing(int[] supportedSwing) {
+        this.supportedSwing = supportedSwing;
+    }
+}
diff --git a/src/main/java/net/irext/decode/service/request/GetACParametersRequest.java b/src/main/java/net/irext/decode/service/request/GetACParametersRequest.java
new file mode 100644
index 0000000..11c2880
--- /dev/null
+++ b/src/main/java/net/irext/decode/service/request/GetACParametersRequest.java
@@ -0,0 +1,52 @@
+package net.irext.decode.service.request;
+
+/**
+ * Filename:       GetACParametersRequest.java
+ * Revised:        Date: 2017-05-16
+ * Revision:       Revision: 1.0
+ * <p>
+ * Description:    HTTP decode online
+ * <p>
+ * Revision log:
+ * 2019-02-14: created by strawmanbobi
+ */
+public class GetACParametersRequest {
+
+    private int remoteIndexId;
+    private String sessionId;
+    private int mode;
+
+    public GetACParametersRequest(int remoteIndexId, String sessionId, int mode) {
+        this.remoteIndexId = remoteIndexId;
+        this.sessionId = sessionId;
+        this.mode = mode;
+    }
+
+    public GetACParametersRequest() {
+
+    }
+
+    public int getRemoteIndexId() {
+        return remoteIndexId;
+    }
+
+    public void setRemoteIndexId(int remoteIndexId) {
+        this.remoteIndexId = remoteIndexId;
+    }
+
+    public String getSessionId() {
+        return sessionId;
+    }
+
+    public void setSessionId(String sessionId) {
+        this.sessionId = sessionId;
+    }
+
+    public int getMode() {
+        return mode;
+    }
+
+    public void setMode(int mode) {
+        this.mode = mode;
+    }
+}
diff --git a/src/main/java/net/irext/decode/service/response/ACParametersResponse.java b/src/main/java/net/irext/decode/service/response/ACParametersResponse.java
new file mode 100644
index 0000000..7278458
--- /dev/null
+++ b/src/main/java/net/irext/decode/service/response/ACParametersResponse.java
@@ -0,0 +1,36 @@
+package net.irext.decode.service.response;
+
+import net.irext.decode.service.model.ACParameters;
+
+/**
+ * Filename:       ACParametersResponse.java
+ * Revised:        Date: 2017-05-16
+ * Revision:       Revision: 1.0
+ * <p>
+ * Description:    Air conditioner support parameters response
+ * <p>
+ * Revision log:
+ * 2019-02-14: created by strawmanbobi
+ */
+public class ACParametersResponse extends ServiceResponse {
+
+    ACParameters entity;
+
+    public ACParametersResponse(Status status, ACParameters entity) {
+        super(status);
+        this.entity = entity;
+    }
+
+    public ACParametersResponse() {
+        super(new Status());
+        this.entity = null;
+    }
+
+    public ACParameters getEntity() {
+        return entity;
+    }
+
+    public void setEntity(ACParameters entity) {
+        this.entity = entity;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/net/irext/decode/service/service/IRDecodeService.java b/src/main/java/net/irext/decode/service/restapi/IRDecodeService.java
similarity index 71%
rename from src/main/java/net/irext/decode/service/service/IRDecodeService.java
rename to src/main/java/net/irext/decode/service/restapi/IRDecodeService.java
index d6c596c..5981379 100644
--- a/src/main/java/net/irext/decode/service/service/IRDecodeService.java
+++ b/src/main/java/net/irext/decode/service/restapi/IRDecodeService.java
@@ -1,22 +1,21 @@
-package net.irext.decode.service.service;
+package net.irext.decode.service.restapi;
 
 import net.irext.decode.service.businesslogic.DecodeLogic;
 import net.irext.decode.service.cache.IDecodeSessionRepository;
 import net.irext.decode.service.cache.IIRBinaryRepository;
 import net.irext.decode.service.mapper.RemoteIndexMapper;
+import net.irext.decode.service.model.ACParameters;
 import net.irext.decode.service.model.DecodeSession;
 import net.irext.decode.service.model.RemoteIndex;
 import net.irext.decode.service.request.CloseRequest;
 import net.irext.decode.service.request.DecodeRequest;
+import net.irext.decode.service.request.GetACParametersRequest;
 import net.irext.decode.service.request.OpenRequest;
+import net.irext.decode.service.response.*;
 import net.irext.decode.service.utils.LoggerUtil;
 import net.irext.decode.service.utils.MD5Util;
 import net.irext.decode.service.businesslogic.IndexLogic;
-import net.irext.decode.service.response.DecodeResponse;
-import net.irext.decode.service.response.ServiceResponse;
-import net.irext.decode.service.response.Status;
-import net.irext.decode.service.response.StringResponse;
-import net.irext.decode.service.service.base.AbstractBaseService;
+import net.irext.decode.service.restapi.base.AbstractBaseService;
 import net.irext.decode.sdk.bean.ACStatus;
 import net.irext.decode.sdk.utils.Constants;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -105,46 +104,51 @@ public class IRDecodeService extends AbstractBaseService {
         }
     }
 
+    @PostMapping("/get_ac_parameters")
+    public ACParametersResponse getACParameters(@RequestBody GetACParametersRequest getACParametersRequest) {
+        try {
+            int remoteIndexId = getACParametersRequest.getRemoteIndexId();
+            String sessionId = getACParametersRequest.getSessionId();
+            int mode = getACParametersRequest.getMode();
+
+            RemoteIndex cachedRemoteIndex = getCachedRemoteIndex(sessionId, remoteIndexId);
+            ACParametersResponse response = new ACParametersResponse();
+
+            if (null == cachedRemoteIndex) {
+                response.setEntity(null);
+                response.setStatus(new Status(Constants.ERROR_CODE_INVALID_SESSION,
+                        Constants.ERROR_CODE_INVALID_SESSION_TEXT));
+                return response;
+            }
+
+            ACParameters acParameters = DecodeLogic.getInstance().getACParameters(cachedRemoteIndex, mode);
+
+            response.setStatus(new Status(Constants.ERROR_CODE_SUCCESS, Constants.ERROR_CODE_SUCESS_TEXT));
+            response.setEntity(acParameters);
+            return response;
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return getExceptionResponse(ACParametersResponse.class);
+        }
+    }
+
     @PostMapping("/decode")
     public DecodeResponse irDecode(@RequestBody DecodeRequest decodeRequest) {
         try {
-            int indexId = decodeRequest.getRemoteIndexId();
+            int remoteIndexId = decodeRequest.getRemoteIndexId();
             ACStatus acStatus = decodeRequest.getAcStatus();
             int keyCode = decodeRequest.getKeyCode();
             int changeWindDir = decodeRequest.getChangeWindDir();
             String sessionId = decodeRequest.getSessionId();
 
-            RemoteIndex cachedRemoteIndex = null;
+            RemoteIndex cachedRemoteIndex = getCachedRemoteIndex(sessionId, remoteIndexId);;
             DecodeResponse response = new DecodeResponse();
 
-            if (null == sessionId) {
-                LoggerUtil.getInstance().trace(TAG, "sessionId is not given, abort");
+            if (null == cachedRemoteIndex) {
                 response.setEntity(null);
                 response.setStatus(new Status(Constants.ERROR_CODE_INVALID_SESSION,
                         Constants.ERROR_CODE_INVALID_SESSION_TEXT));
-            } else {
-                Integer cachedRemoteIndexId = decodeSessionRepository.find(sessionId);
-                if (null == cachedRemoteIndexId) {
-                    response.setEntity(null);
-                    response.setStatus(new Status(Constants.ERROR_CODE_INVALID_SESSION,
-                            Constants.ERROR_CODE_INVALID_SESSION_TEXT));
-                } else {
-                    cachedRemoteIndex = irBinaryRepository.find(cachedRemoteIndexId);
-                    if (null == cachedRemoteIndex) {
-                        response.setEntity(null);
-                        response.setStatus(new Status(Constants.ERROR_CODE_INVALID_SESSION,
-                                Constants.ERROR_CODE_INVALID_SESSION_TEXT));
-                    } else {
-                        if (indexId != cachedRemoteIndex.getId()) {
-                            response.setEntity(null);
-                            response.setStatus(new Status(Constants.ERROR_CODE_INVALID_SESSION,
-                                    Constants.ERROR_CODE_INVALID_SESSION_TEXT));
-                        }
-                    }
-                }
-            }
-
-            if (response.getStatus().getCode() != Constants.ERROR_CODE_SUCCESS) {
                 return response;
             }
 
@@ -175,4 +179,23 @@ public class IRDecodeService extends AbstractBaseService {
             return getExceptionResponse(DecodeResponse.class);
         }
     }
+
+    private RemoteIndex getCachedRemoteIndex(String sessionId, int remoteIndexId) {
+        RemoteIndex cachedRemoteIndex = null;
+
+        if (null == sessionId) {
+            LoggerUtil.getInstance().trace(TAG, "sessionId is not given, abort");
+        } else {
+            Integer cachedRemoteIndexId = decodeSessionRepository.find(sessionId);
+            if (null != cachedRemoteIndexId) {
+                cachedRemoteIndex = irBinaryRepository.find(cachedRemoteIndexId);
+                if (null != cachedRemoteIndex) {
+                    if (remoteIndexId != cachedRemoteIndex.getId()) {
+                        cachedRemoteIndex = null;
+                    }
+                }
+            }
+        }
+        return cachedRemoteIndex;
+    }
 }
diff --git a/src/main/java/net/irext/decode/service/service/base/AbstractBaseService.java b/src/main/java/net/irext/decode/service/restapi/base/AbstractBaseService.java
similarity index 91%
rename from src/main/java/net/irext/decode/service/service/base/AbstractBaseService.java
rename to src/main/java/net/irext/decode/service/restapi/base/AbstractBaseService.java
index f594109..4b7027e 100644
--- a/src/main/java/net/irext/decode/service/service/base/AbstractBaseService.java
+++ b/src/main/java/net/irext/decode/service/restapi/base/AbstractBaseService.java
@@ -1,4 +1,4 @@
-package net.irext.decode.service.service.base;
+package net.irext.decode.service.restapi.base;
 
 import net.irext.decode.service.Constants;
 import net.irext.decode.service.response.ServiceResponse;
@@ -11,7 +11,7 @@ import org.apache.commons.logging.LogFactory;
  * Revised:        Date: 2017-04-27
  * Revision:       Revision: 1.0
  * <p>
- * Description:    Base service abstract class implemented service interface
+ * Description:    Base restapi abstract class implemented restapi interface
  * <p>
  * Revision log:
  * 2017-04-27: created by strawmanbobi