diff --git a/action/action_type.py b/action/action_type.py
index 5fedb74..c04c4cc 100644
--- a/action/action_type.py
+++ b/action/action_type.py
@@ -6,3 +6,4 @@ class ActionType(Enum):
     ModTapAction = 2
     LayerOnAction = 3
     LayerModAction = 4
+    LayerToggleAction = 5
diff --git a/action/layer_toggle_action.py b/action/layer_toggle_action.py
new file mode 100644
index 0000000..bf03d30
--- /dev/null
+++ b/action/layer_toggle_action.py
@@ -0,0 +1,24 @@
+from evdev.events import KeyEvent
+
+import mapper
+from action.action_type import ActionType
+from log import debug
+
+
+class LayerToggleAction:
+    type: ActionType
+    layer: int
+
+    def __init__(self, layer, ):
+        self.type = ActionType.LayerToggleAction
+        self.layer = layer
+
+    def handle(self, ui, e, config, *args):
+        debug('-- handling layer toggle action --')
+        if e.value == KeyEvent.key_down:
+            if mapper.active_layers[self.layer]:
+                debug(f'disabling layer [{self.layer}]')
+                mapper.disable_layer(ui, self.layer, config)
+            else:
+                debug(f'enabling layer [{self.layer}]')
+                mapper.enable_layer(self.layer, self, config)
diff --git a/example/config.py b/example/config.py
index 9d3ad66..3e723b2 100644
--- a/example/config.py
+++ b/example/config.py
@@ -10,11 +10,11 @@
         KC_TAB ,          KC_Q   , KC_W   , KC_E   , KC_R   , KC_T   , KC_Y   , KC_U   , KC_I   , KC_O   , KC_P   , KC_LBRC, KC_RBRC, KC_BSLS,
         KC_CAPS,          KC_A   , KC_S   , KC_D   , KC_F   , KC_G   , KC_H   , KC_J   , KC_K   , KC_L   , KC_SCLN, KC_QUOT, KC_ENT ,
         KC_LSFT, KC_Z   , KC_X   , KC_C   , KC_V   , KC_B   , KC_N   , KC_M   , KC_COMM, KC_DOT , KC_SLSH, KC_RSFT,                   KC_UP  ,
-        KC_LCTL, KC_LGUI, KC_LALT,          LSFT_T(KC_SPC)  ,                   KC_RALT, KC_APP , KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT,
+        TG(1)  , KC_LGUI, KC_LALT,          LSFT_T(KC_SPC)  ,                   KC_RALT, KC_APP , KC_RCTL,                   KC_LEFT, KC_DOWN, KC_RGHT,
     ],
     [
         T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,
-        T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,          T______,
+        T______, T______, KC_A   , T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,          T______,
         T______,          T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,
         T______,          T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,
         T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______, T______,                   T______,
diff --git a/key.py b/key.py
index fd178b0..7c2edeb 100644
--- a/key.py
+++ b/key.py
@@ -2,12 +2,13 @@
 
 from action.layer_mod_action import LayerModAction
 from action.layer_on_action import LayerOnAction
+from action.layer_toggle_action import LayerToggleAction
 from action.mod_key_action import ModKeyAction
 from action.mod_tap_action import ModTapAction
 
 # special keys
 
-KC_NO = None
+KC_NO = 999
 
 KC_TRANSPARENT = None
 KC_TRNS = KC_TRANSPARENT
@@ -705,3 +706,7 @@ def MO(layer):
 
 def LM(layer, *modifiers):
     return LayerModAction(layer, *modifiers)
+
+
+def TG(layer):
+    return LayerToggleAction(layer)
diff --git a/mapper.py b/mapper.py
index 3d59985..27faeb8 100644
--- a/mapper.py
+++ b/mapper.py
@@ -78,12 +78,18 @@ def handle_event(e, kb, ui, config):
         debug(f'key is mapped to action of type {key.type} at {pos}')
         key.handle(ui, e, config, pos)
     else:
-        debug(f'key is mapped to key: {ecodes.KEY[key]} ({key}) at {pos}')
+        debug(f'key is mapped to key: {get_key_name(key)} ({key}) at {pos}')
         write_key(ui, key, e, layer_index, config)
 
     update_timestamps(pos, e)
 
 
+def get_key_name(key):
+    if key == 999:
+        return 'KC_NO'
+    return ecodes.KEY.get(key, "UNKNOWN")
+
+
 def map_key_to_pos(code, config):
     debug(f'looking for key {ecodes.KEY[code]} with code {code}')
     try:
@@ -120,7 +126,7 @@ def find_key(pos, config):
 def write_key(ui, key, e, layer, config):
     global active_layers
     active_layer = active_layers[layer]
-    if active_layer and active_layer.activator:
+    if active_layer and active_layer.activator and hasattr(active_layer.activator, 'handle_layer_key'):
         active_layer.activator.handle_layer_key(ui, key, e, config)
     else:
         host.write_code(ui, key, e.value)