diff --git a/src/pymc_core/hardware/gpio_manager.py b/src/pymc_core/hardware/gpio_manager.py
index 71b95a8..75f8455 100644
--- a/src/pymc_core/hardware/gpio_manager.py
+++ b/src/pymc_core/hardware/gpio_manager.py
@@ -9,11 +9,11 @@
 import sys
 import threading
 import time
+import os
 from typing import Callable, Dict, Optional
 
 try:
     from periphery import GPIO, EdgeEvent
-
     PERIPHERY_AVAILABLE = True
 except ImportError:
     # Mock GPIO classes for testing/non-hardware environments
@@ -24,7 +24,6 @@
 # Optional libgpiod support
 try:
     import gpiod
-
     GPIOD_AVAILABLE = True
 except Exception:
     GPIOD_AVAILABLE = False
diff --git a/src/pymc_core/hardware/sx1262_wrapper.py b/src/pymc_core/hardware/sx1262_wrapper.py
index f306a49..ae69b90 100644
--- a/src/pymc_core/hardware/sx1262_wrapper.py
+++ b/src/pymc_core/hardware/sx1262_wrapper.py
@@ -78,7 +78,7 @@ def __init__(
             is_waveshare: Use alternate initialization needed for Waveshare HAT
             use_dio3_tcxo: Enable DIO3 TCXO control (default: False)
             dio3_tcxo_voltage: TCXO reference voltage in volts (default: 1.8)
-            use_dio2_rf: Enable DIO2 as RF switch control (default: False)
+            use_dio2_rf: Enable DIO2 as RF switch control (default: False)    
         """
         # Check if there's already an active instance and clean it up
         if SX1262Radio._active_instance is not None: