diff --git a/parser/devicePrsInternal.go b/parser/devicePrsInternal.go
index 163e331..87812d8 100755
--- a/parser/devicePrsInternal.go
+++ b/parser/devicePrsInternal.go
@@ -224,9 +224,12 @@ func parseData(data []byte, imei uint64, tagOption *opt.Options) (rec DeviceReco
 			ioVal := convBinaryToUint16(addOneByteInTwoByte(data[currByte:plusByte]),2,"io1Val")
 			//fmt.Printf("io1Val %d\n",ioVal)
 
+			strVal := fmt.Sprintf("%v",int16(ioVal))
+			//fmt.Printf("strVal %v\n",strVal)
+
 			tagDevice_ := tags_[strconv.Itoa(int(ioID))]
 			tagDevice_.TagId = strconv.Itoa(int(ioID))
-			tagDevice_.TagVal = strconv.Itoa(int(ioVal))
+			tagDevice_.TagVal = strVal
 			if tagDevice_.TagName != ""{
 				//tags_[strconv.Itoa(int(ioID))] = tagDevice_
 				tags_[tagDevice_.TagName] = tagDevice_
@@ -253,10 +256,14 @@ func parseData(data []byte, imei uint64, tagOption *opt.Options) (rec DeviceReco
 			currByte = plusByte
 			plusByte = currByte + 2
 			ioVal := convBinaryToUint16(data[currByte:plusByte],2,"io2Val")
-			//fmt.Printf("io2Val %d\n",ioVal)
+			// fmt.Printf("io2Val %d\n",ioVal)
+			// fmt.Printf("io2Val INT %d\n",int16(ioVal))
+
+			strVal := fmt.Sprintf("%v",int16(ioVal))
+			//fmt.Printf("strVal %v\n",strVal)
 
 			tagDevice_ := tags_[strconv.Itoa(int(ioID))]
-			tagDevice_.TagVal = strconv.Itoa(int(ioVal))
+			tagDevice_.TagVal = strVal
 			if tagDevice_.TagName != ""{
 				tags_[tagDevice_.TagName] = tagDevice_
 			}
@@ -282,8 +289,11 @@ func parseData(data []byte, imei uint64, tagOption *opt.Options) (rec DeviceReco
 			ioVal := convBinaryToInt32(data[currByte:plusByte],4,"io4Val")
 			//fmt.Printf("io4Val %d\n",ioVal)
 
+			strVal := fmt.Sprintf("%v",int32(ioVal))
+			//fmt.Printf("strVal %v\n",strVal)
+
 			tagDevice_ := tags_[strconv.Itoa(int(ioID))]
-			tagDevice_.TagVal = strconv.FormatInt(int64(ioVal), 10)
+			tagDevice_.TagVal = strVal
 			if tagDevice_.TagName != ""{
 				tags_[tagDevice_.TagName] = tagDevice_
 			}
@@ -309,8 +319,11 @@ func parseData(data []byte, imei uint64, tagOption *opt.Options) (rec DeviceReco
 			ioVal := convBinaryToInt64(data[currByte:plusByte],8,"io8Val")
 			//fmt.Printf("io8Val %d\n",ioVal)
 
+			strVal := fmt.Sprintf("%v",int64(ioVal))
+			//fmt.Printf("strVal %v\n",strVal)
+
 			tagDevice_ := tags_[strconv.Itoa(int(ioID))]
-			tagDevice_.TagVal = strconv.FormatInt(int64(ioVal), 10)
+			tagDevice_.TagVal = strVal
 			if tagDevice_.TagName != ""{
 				tags_[tagDevice_.TagName] = tagDevice_
 			}