diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..aedae76
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+ 
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+ 
+    http://www.apache.org/licenses/LICENSE-2.0
+ 
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
\ No newline at end of file
diff --git a/code/aliyunIot.py b/code/aliyunIot.py
index f4e3f98..6cf8413 100644
--- a/code/aliyunIot.py
+++ b/code/aliyunIot.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import ujson
 import utime
 import _thread
diff --git a/code/battery.py b/code/battery.py
index 32c3921..4336af2 100644
--- a/code/battery.py
+++ b/code/battery.py
@@ -1,3 +1,16 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 from misc import Power
 from usr.logging import getLogger
diff --git a/code/common.py b/code/common.py
index 3540eee..4faf16b 100644
--- a/code/common.py
+++ b/code/common.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import _thread
 from misc import Power
 
diff --git a/code/led.py b/code/led.py
index 3f7f51d..5c10d95 100644
--- a/code/led.py
+++ b/code/led.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # from machine import Pin
 from usr.logging import getLogger
 
diff --git a/code/location.py b/code/location.py
index 679d0f7..eeb2d2a 100644
--- a/code/location.py
+++ b/code/location.py
@@ -1,3 +1,16 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 import ure
 import osTimer
diff --git a/code/logging.py b/code/logging.py
index 34c50c5..8b6da24 100644
--- a/code/logging.py
+++ b/code/logging.py
@@ -1,3 +1,16 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 import utime
 import usr.settings as settings
diff --git a/code/main.py b/code/main.py
index 24a9b0d..5d9d361 100644
--- a/code/main.py
+++ b/code/main.py
@@ -1,3 +1,16 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 from usr.tracker import Tracker
 from usr.settings import settings
diff --git a/code/mpower.py b/code/mpower.py
index e81536e..64869e8 100644
--- a/code/mpower.py
+++ b/code/mpower.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import pm
 import utime
 import modem
diff --git a/code/ota.py b/code/ota.py
index e69de29..d4f2d0c 100644
--- a/code/ota.py
+++ b/code/ota.py
@@ -0,0 +1,13 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/code/quecthing.py b/code/quecthing.py
index c353fc5..630d7a6 100644
--- a/code/quecthing.py
+++ b/code/quecthing.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import osTimer
 import quecIot
 
diff --git a/code/remote.py b/code/remote.py
index 0aa93ff..787c196 100644
--- a/code/remote.py
+++ b/code/remote.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import uos
 import utime
 import ql_fs
diff --git a/code/sensor.py b/code/sensor.py
index 64759ef..f84c1b3 100644
--- a/code/sensor.py
+++ b/code/sensor.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import _thread
 
 from queue import Queue
diff --git a/code/settings.py b/code/settings.py
index 95796d2..96f7127 100644
--- a/code/settings.py
+++ b/code/settings.py
@@ -1,3 +1,16 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 import ql_fs
 import ujson
diff --git a/code/test_tracker.py b/code/test_tracker.py
index 5051e99..495b251 100644
--- a/code/test_tracker.py
+++ b/code/test_tracker.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import pm
 import ure
 import utime
diff --git a/code/timer.py b/code/timer.py
index 5a41832..80169fb 100644
--- a/code/timer.py
+++ b/code/timer.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import osTimer
 
 from usr.common import Singleton
diff --git a/code/tracker.py b/code/tracker.py
index 62f06fd..74fcfcd 100644
--- a/code/tracker.py
+++ b/code/tracker.py
@@ -1,3 +1,17 @@
+# Copyright (c) Quectel Wireless Solution, Co., Ltd.All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import pm
 import utime
 import _thread
diff --git a/docs/tracker公版方案用户指导手册.md b/docs/tracker公版方案用户指导手册.md
index 15db26c..c2bb063 100644
--- a/docs/tracker公版方案用户指导手册.md
+++ b/docs/tracker公版方案用户指导手册.md
@@ -6,7 +6,7 @@
 
 #### 低电关机
 
-- 开机状态下，电量≤5%时，自动关机，关闭一切指示灯，并在关机前，需向云端报告一次设备信息。
+- 开机状态下，电量≤`低电关机阈值(默认5%)`时，自动关机，关闭一切指示灯，并在关机前，需向云端报告一次设备信息。
 
 #### 开机自检及运行状态指示灯(网络、GPS检测开发完成, 其他开发中)
 
@@ -18,9 +18,9 @@
 
 #### 电量指示灯(开发中)
 
-- `低电告警阈值`<电量：常亮
-- `低电关机阈值`<电量<=`低电告警阈值`：1秒闪烁一次
-- 电量<=`低电关机阈值`：熄灭
+- `低电告警阈值(默认30%)`<电量：常亮
+- `低电关机阈值(默认5%)`<电量<=`低电告警阈值(默认30%)`：1秒闪烁一次
+- 电量<=`低电关机阈值(默认5%)`：熄灭
 
 ### 设备信息交互功能