diff --git a/bcf2000.py b/bcf2000.py
--- a/bcf2000.py
+++ b/bcf2000.py
@@ -99,6 +99,7 @@ class BCF2000(object):
         assert len(which) == 1, "unknown control name %r" % name
         if isinstance(value, bool):
             value = value * 127
+        #print "bcf: write %s %s" % (name, value)
         self.dev.write(chr(0xb0) + chr(which[0]) + chr(int(value)))