diff --git a/index.js b/index.js
index 381e73a..56abb48 100644
--- a/index.js
+++ b/index.js
@@ -12,9 +12,9 @@ let deviceManager = DeviceManager({
   onUpdateStats: updateStats,
   measurements: {
     temperature: {type: 'integer', min: -10, max: 50},
-    air_humidity: {type: 'integer', min: 30, max: 100},
-    ground_humidity: {type: 'integer', min: 30, max: 100},
-    airforce: {type: 'integer', min: 30, max: 100}
+    air_humidity: {type: 'integer', min: 20, max: 100},
+    ground_humidity: {type: 'integer', min: 20, max: 100},
+    airforce: {type: 'integer', min: 0, max: 10}
   }
 })