diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..7ccf6db
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,11 @@
+let
+  pkgs = import <nixpkgs> {};
+in pkgs.mkShell {
+  packages = [
+    (pkgs.python3.withPackages (python-pkgs: [
+      python-pkgs.ipython
+      python-pkgs.requests
+    ]))
+  ];
+}
+
diff --git a/warema_wms/wms_controller.py b/warema_wms/wms_controller.py
index 55c3235..dc804df 100644
--- a/warema_wms/wms_controller.py
+++ b/warema_wms/wms_controller.py
@@ -13,7 +13,7 @@
 CMD_PREFIX = '90'
 RX_LANG = '023dff'
 RX_ROOM_NAME = '0203'
-RX_CHANNAL_INFO = '0347'
+RX_CHANEL_INFO = '0347'
 RX_CHECK_READY = '0323'
 RX_SHADE_STATE = '0431'
 
@@ -84,7 +84,7 @@ def send_rx_room_name_command(self, room_id):
         return self._send_command(RX_ROOM_NAME, format(room_id, '02x'))
 
     def send_rx_channel_info(self, room_id, channel_id):
-        return self._send_command(RX_CHANNAL_INFO, format(room_id, '02x') + format(channel_id, '02x'))
+        return self._send_command(RX_CHANEL_INFO, format(room_id, '02x') + format(channel_id, '02x'))
 
     def send_rx_shade_state(self, room_id, channel_id):
         return self._send_command(RX_SHADE_STATE, format(room_id, '02x') + format(channel_id, '02x') + '01')