diff --git a/README.md b/README.md
index 6e2838a..f5fc92b 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ Check and run [test.js](./test.js) for complete examples
   * *timeout* - Request timeout in milliseconds, default: 1000
   * *playbackDelayOff* - Playback delay before it considered there's no media playing, default: 10000
   * *retryPowerOn* - How many retry before power on request considered failure, default: 10
+  * *keycodePowerOn* - Keycode to power on device, default: 'KEYCODE_POWER'
+  * *keycodePowerOff* - Keycode to power on device, default: 'KEYCODE_POWER'
 
 ## Methods
 
@@ -40,6 +42,7 @@ Check if Android device have `tail` command.
 Wrapper to run ADB command
 
 **parameters**
+Available parameters:
 
 * **params**: string - the adb command, eg: `dumpsys`
 
@@ -54,6 +57,7 @@ Wrapper to run ADB command
 Wrapper to run shell command
 
 **parameters**
+Available parameters:
 
 * **params**: string - the shell command, eg: `dumpsys`
 * *id*: string - process id
diff --git a/index.js b/index.js
index f86391f..02b4268 100644
--- a/index.js
+++ b/index.js
@@ -52,6 +52,10 @@ class adb extends EventEmitter {
         const _playbackDelayOff = config.playbackDelayOff || 10000;
         const _retryPowerOn = config.retryPowerOn || 5;
 
+        // Keycode
+        const _keycodePowerOn = config.keycodePowerOn || 'KEYCODE_POWER';
+        const _keycodePowerOff = config.keycodePowerOff || 'KEYCODE_POWER';
+
         // Device state
         let _connected = this.DISCONNECTED;
         let _currentAppID = false;
@@ -212,7 +216,7 @@ class adb extends EventEmitter {
                 do {
                     await this.sendKeycode(keycode || `KEYCODE_POWER`);
                     await _sleep(100);
-                    await _state();
+                    await _state(true);
 
                     _emitUpdate(`debugPower${isPowerOn ? `On` : `Off`}`, { awake: _isAwake }, retry);
 
@@ -242,7 +246,7 @@ class adb extends EventEmitter {
          */
         this.powerOn = async keycode => {
             if (_isAwake) return { result: true, message: `Device already awake` };
-            return await _power(keycode || `KEYCODE_POWER`);
+            return await _power(keycode || _keycodePowerOn || `KEYCODE_POWER`);
         }
         /**
          * Turn off device
@@ -250,7 +254,7 @@ class adb extends EventEmitter {
          */
         this.powerOff = async keycode => {
             if (!_isAwake) return { result: true, message: `Device already sleep` };
-            return await _power(keycode || `KEYCODE_POWER`, false);
+            return await _power(keycode || _keycodePowerOff || `KEYCODE_POWER`, false);
         }
         /**
          * Get power information
diff --git a/package.json b/package.json
index f77a7e0..2765c5b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nodejs-adb-wrapper",
-  "version": "1.3.4",
+  "version": "1.3.5",
   "description": "Node.js module to connect to Android device using ADB",
   "main": "index.js",
   "scripts": {