diff --git a/package-lock.json b/package-lock.json
index 28f6cf9..17f3be7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "jsmodbus",
-  "version": "4.0.6",
+  "version": "4.0.7",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "jsmodbus",
-      "version": "4.0.6",
+      "version": "4.0.7",
       "license": "MIT",
       "dependencies": {
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@@ -24,6 +24,7 @@
         "commander": "^3.0.2",
         "mocha": "^3.3.0",
         "nyc": "^13.1.0",
+        "serialport": "^7.1.5",
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         "tslint": "^5.20.0",
         "tslint-config-standard": "^8.0.1",
@@ -218,6 +219,187 @@
         "to-fast-properties": "^2.0.0"
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+      "dependencies": {
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+      },
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+      "dependencies": {
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+      },
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+      "dev": true,
+      "hasInstallScript": true,
+      "dependencies": {
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+        "@serialport/parser-readline": "^2.0.2",
+        "bindings": "^1.3.0",
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+        "nan": "^2.13.2",
+        "prebuild-install": "^5.2.1"
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+      "dev": true,
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+      "dev": true,
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+      "dev": true,
+      "dependencies": {
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+      "engines": {
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+    "node_modules/@serialport/parser-ready": {
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+      "resolved": "https://registry.npmjs.org/@serialport/parser-ready/-/parser-ready-2.0.2.tgz",
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+      "dev": true,
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@serialport/parser-regex": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@serialport/parser-regex/-/parser-regex-2.0.2.tgz",
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+      "dev": true,
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@serialport/stream": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@serialport/stream/-/stream-2.0.5.tgz",
+      "integrity": "sha512-9gc3zPoAqs/04mvq8TdZ7GxtnacCDuw3/u0u18UXXHgC/5tNDYkY+hXFIJB1fQFnP5yyNB1L2XLfX974ySJg9Q==",
+      "dev": true,
+      "dependencies": {
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+        "debug": "^4.1.1"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@serialport/stream/node_modules/debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "dev": true,
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
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     "node_modules/@types/crc": {
       "version": "3.4.0",
       "resolved": "https://registry.npmjs.org/@types/crc/-/crc-3.4.0.tgz",
@@ -254,6 +436,15 @@
         "@types/node": "*"
       }
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+    "node_modules/ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true,
+      "engines": {
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       "version": "3.2.1",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
@@ -266,6 +457,22 @@
         "node": ">=4"
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+    "node_modules/aproba": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
+      "dev": true
+    },
+    "node_modules/are-we-there-yet": {
+      "version": "1.1.7",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.7.tgz",
+      "integrity": "sha512-nxwy40TuMiUGqMyRHgCSWZ9FM4VAoRP4xUYSTv5ImRog+h9yISPbVH7H8fASCIzYn9wlEv4zvFL7uKDMCFQm3g==",
+      "dev": true,
+      "dependencies": {
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.6"
+      }
+    },
     "node_modules/argparse": {
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       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
@@ -281,6 +488,60 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
       "dev": true
     },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
+    "node_modules/bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
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+      "dependencies": {
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+    "node_modules/bl": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.1.0.tgz",
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+      "dev": true,
+      "dependencies": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
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+    "node_modules/bl/node_modules/readable-stream": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+      "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
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@@ -297,6 +558,30 @@
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       "dev": true
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+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "dependencies": {
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+        "ieee754": "^1.1.13"
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     "node_modules/builtin-modules": {
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       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
@@ -341,6 +626,21 @@
         "node": ">=4"
       }
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+    "node_modules/chownr": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
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+      "dev": true
+    },
+    "node_modules/code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true,
+      "engines": {
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+      }
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     "node_modules/color-convert": {
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@@ -368,6 +668,18 @@
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       "dev": true
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+    "node_modules/console-control-strings": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
+      "dev": true
+    },
+    "node_modules/core-util-is": {
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+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.3.tgz",
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+      "dev": true
+    },
     "node_modules/crc": {
       "version": "3.4.0",
       "resolved": "https://registry.npmjs.org/crc/-/crc-3.4.0.tgz",
@@ -382,6 +694,45 @@
         "ms": "^2.1.1"
       }
     },
+    "node_modules/decompress-response": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-4.2.1.tgz",
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+      "dev": true,
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+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
+      "dev": true
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+      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
+      "dev": true,
+      "bin": {
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@@ -413,6 +764,15 @@
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@@ -444,6 +804,21 @@
         "node": ">=0.10.0"
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+      "dev": true,
+      "engines": {
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@@ -454,12 +829,40 @@
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