diff --git a/plugins/sensors/switchbotmeter_multi b/plugins/sensors/switchbotmeter_multi
index 6447b41a..33d9395c 100755
--- a/plugins/sensors/switchbotmeter_multi
+++ b/plugins/sensors/switchbotmeter_multi
@@ -84,7 +84,7 @@ graph_title SwitchBot Meter Humidity
 graph_category sensors
 graph_scale no
 graph_vlabel Humidity %
-graph_args --base 1000
+graph_args --base 1000 --lower-limit 0 --upper-limit 100
 EOF
     for deviceid in ${deviceids}
     do
@@ -97,7 +97,7 @@ graph_title SwitchBot Meter Battery
 graph_category sensors
 graph_scale no
 graph_vlabel Battery %
-graph_args --base 1000
+graph_args --base 1000 --lower-limit 0 --upper-limit 100
 EOF
     for deviceid in ${deviceids}
     do