diff --git a/decoder.js b/decoder.js
new file mode 100644
index 0000000..fe4cb01
--- /dev/null
+++ b/decoder.js
@@ -0,0 +1,32 @@
+function Decode(fPort, data, variables) {
+    if (fPort === 13) {
+        return [
+          {
+                led_state: bytes[0]===0?"Off":"On",
+                mtm_code_1: bytes[1],
+                mtm_code_2: bytes[2],
+                hw_code: bytes[3],
+                battery_level: bytes[4]+"%",
+                size_value: bytes[5],
+                spot_cnt: bytes[6]+" blocks",
+                spillage_level: bytes[7]+"%",
+                top1_position:"X= "+bytes[8]%10+" Y= "+ parseFloat(bytes[8]/10).toFixed(0),
+                top2_position:"X= "+bytes[9]%10+" Y= "+ parseFloat(bytes[9]/10).toFixed(0),
+                top3_position:"X= "+bytes[10]%10+" Y= "+ parseFloat(bytes[10]/10).toFixed(0),
+                top4_position:"X= "+bytes[11]%10+" Y= "+ parseFloat(bytes[11]/10).toFixed(0),
+                min_temp: (bytes[12] | bytes[13] / 100)+"C",
+                average_temp: (bytes[14] + bytes[15] / 100)+"C",
+                max_temp: (bytes[16] + bytes[17] / 100)+"C",
+                center_temp: (bytes[18] + bytes[19] / 100)+"C",
+            }
+        ]
+    }
+    else if (fPort === 14) {
+        return [
+           {
+                led_state: (bytes[0]&0x7f)===0?"Off":"On",
+                battery_level: bytes[1]+"%",
+            }
+        ];
+    }    
+ };
\ No newline at end of file