diff --git a/miio/airpurifier_miot.py b/miio/airpurifier_miot.py
index 6799a1619..d85fd849c 100644
--- a/miio/airpurifier_miot.py
+++ b/miio/airpurifier_miot.py
@@ -505,17 +505,7 @@ def set_led(self, led: bool):
 class AirPurifierMB4(BasicAirPurifierMiot):
     """Main class representing the air purifier which uses MIoT protocol."""
 
-    def __init__(
-        self,
-        ip: str = None,
-        token: str = None,
-        start_id: int = 0,
-        debug: int = 0,
-        lazy_discover: bool = True,
-    ) -> None:
-        super().__init__(
-            _MODEL_AIRPURIFIER_MB4, ip, token, start_id, debug, lazy_discover
-        )
+    mapping = _MODEL_AIRPURIFIER_MB4
 
     @command(
         default_output=format_output(
diff --git a/miio/airqualitymonitor_miot.py b/miio/airqualitymonitor_miot.py
index 0c46b5128..14293c3c7 100644
--- a/miio/airqualitymonitor_miot.py
+++ b/miio/airqualitymonitor_miot.py
@@ -198,15 +198,7 @@ def __repr__(self) -> str:
 class AirQualityMonitorCGDN1(MiotDevice):
     """Qingping Air Monitor Lite."""
 
-    def __init__(
-        self,
-        ip: str = None,
-        token: str = None,
-        start_id: int = 0,
-        debug: int = 0,
-        lazy_discover: bool = True,
-    ) -> None:
-        super().__init__(_MAPPING_CGDN1, ip, token, start_id, debug, lazy_discover)
+    mapping = _MAPPING_CGDN1
 
     @command(
         default_output=format_output(
diff --git a/miio/yeelight_dual_switch.py b/miio/yeelight_dual_switch.py
index de0f1e9f5..b76a987cd 100644
--- a/miio/yeelight_dual_switch.py
+++ b/miio/yeelight_dual_switch.py
@@ -133,15 +133,7 @@ class YeelightDualControlModule(MiotDevice):
     """Main class representing the Yeelight Dual Control Module (yeelink.switch.sw1)
     which uses MIoT protocol."""
 
-    def __init__(
-        self,
-        ip: str = None,
-        token: str = None,
-        start_id: int = 0,
-        debug: int = 0,
-        lazy_discover: bool = True,
-    ) -> None:
-        super().__init__(_MAPPING, ip, token, start_id, debug, lazy_discover)
+    mapping = _MAPPING
 
     @command(
         default_output=format_output(