diff --git a/enviroplus/gas.py b/enviroplus/gas.py
index 3583428..1e78010 100644
--- a/enviroplus/gas.py
+++ b/enviroplus/gas.py
@@ -64,7 +64,7 @@ def setup():
     else:
         adc.set_sample_rate(1600)
 
-    _heater = gpiodevice.get_pin("GPIO24")
+    _heater = gpiodevice.get_pin("GPIO24", "EnviroPlus", OUTH)
 
     atexit.register(cleanup)