diff --git a/sensors.py b/sensors.py
index ea56080..7911b52 100644
--- a/sensors.py
+++ b/sensors.py
@@ -215,7 +215,7 @@ class Sensors():
         self.available_sensors = {
             'T_food':     Temperature1W('28-06214252b671'),
             'T_ext':      SHT40('Temperature'),
-            'H_ext':      SHT40('Humidity'),
+            'H_ext':      SHT40('Humidity', every=60*60),
             'T_ext2':     AHT40('Temperature'),
             'H_ext2':     AHT40('Humidity'),
             'heater':     GPIOState(22),