diff --git a/README.md b/README.md
index e7675dc..1c414f5 100644
--- a/README.md
+++ b/README.md
@@ -170,7 +170,14 @@
 * If you are in a film or paper correction profile, and the
   temperature is beyond the range of the timer to correct, the
   temperature display will blink.  This lets you know the timer is not
-  capable of correcting for temperatures in that range.
+  capable of correcting for temperatures in that range.  This does
+  not happen in the realtime profile.  There is also an audible
+  alert (see below.)  Both the blinking and the audible alerting
+  take place whether the timer is actually running- or not.  This
+  is intentional to make you take action.  If you want to
+  do compensating timing, you have to get the temperature back
+  in range.  If not - say, you just want to measure temperature -
+  then you should switch to the realtime profile.
 
 
 ## Sounds
@@ -182,6 +189,10 @@
 * The timer provides a long single beep at each virtual 30 second
   mark.
 
+* In film or paper correction profiles, if the temperature
+  is beyond the range of the timer to correct, you will hear
+  5 short beeps repeated.
+
 
 ## What's Next?
 
diff --git a/TODO b/TODO
index d9ec33b..203a35d 100644
--- a/TODO
+++ b/TODO
@@ -1,10 +1,4 @@
-- Cleanups:
-
-  - Check to make sure out of range temps still handled properly
-  - Improve out of range notification
-
 - Autodetect temp probe device
-- Generate compensation tables at startup based on low/hi range - perhaps limited by times <400ms
 - Speed up boot time by removing all unneeded boot activity
 - Package into a preconfigured DD image for release simplicity
 - Longer term: Move to an SPI based set of displays for better rendering speed.
diff --git a/devtimer.py b/devtimer.py
index 966b6df..90ee5e2 100755
--- a/devtimer.py
+++ b/devtimer.py
@@ -137,7 +137,7 @@
 
         # 1-wire interfaces (like the DS18B20 uses) can occasionally
         # return wildly wrong results.  For this reason, we throw away
-        # values that have changed more than 10 degrees since the last
+        # values that have changed more than 20 degrees since the last
         # reading, since that's almost certainly noise.
 
         # At startup we want to suppress this check because we have  a
@@ -148,7 +148,7 @@
         if monitor_temps.CURRENT_TEMP == monitor_temps.SENTINEL:
             monitor_temps.CURRENT_TEMP = temp
 
-        elif abs(temp - monitor_temps.CURRENT_TEMP) <= 10:
+        elif abs(temp - monitor_temps.CURRENT_TEMP) <= 20:
             monitor_temps.CURRENT_TEMP = temp
 
         probe.close()
@@ -297,6 +297,8 @@
     if show_temp.OUTOFRANGE:
         led.brightness=0
         led.set_segments([hun, ten, one, show_temp.farenheight])
+        beep(5, 0.03)
+
 
 
 #####