1 files changed, 63 insertions, 0 deletions
diff --git a/check-health.d/voltage.rsc b/check-health.d/voltage.rsc
new file mode 100644
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--- /dev/null
+++ b/check-health.d/voltage.rsc
@@ -0,0 +1,63 @@
+#!rsc by RouterOS
+# RouterOS script: check-health.d/voltage
+# Copyright (c) 2019-2025 Christian Hesse <mail@eworm.de>
+# https://rsc.eworm.de/COPYING.md
+#
+# requires RouterOS, version=7.15
+#
+# check for RouterOS health state - voltage plugin
+# https://rsc.eworm.de/doc/check-health.md
+
+:global CheckHealthPlugins;
+
+:set ($CheckHealthPlugins->[ :jobname ]) do={
+  :local FuncName [ :tostr $0 ];
+
+  :global CheckHealthLast;
+  :global CheckHealthVoltageLow;
+  :global CheckHealthVoltagePercent;
+  :global Identity;
+
+  :global FormatLine;
+  :global IfThenElse;
+  :global LogPrint;
+  :global SendNotification2;
+  :global SymbolForNotification;
+
+  :if ([ :len [ /system/health/find where type="V" ] ] = 0) do={
+    $LogPrint debug $FuncName ("Your device does not provide any voltage health values.");
+    :return false;
+  }
+
+  :foreach Voltage in=[ /system/health/find where type="V" ] do={
+    :local Name  [ /system/health/get $Voltage name  ];
+    :local Value [ /system/health/get $Voltage value ];
+
+    :if ([ :typeof ($CheckHealthLast->$Name) ] != "nothing") do={
+      :local NumCurr [ $TempToNum $Value ];
+      :local NumLast [ $TempToNum ($CheckHealthLast->$Name) ];
+
+      :if ($NumLast * (100 + $CheckHealthVoltagePercent) < $NumCurr * 100 || \
+           $NumLast * 100 > $NumCurr * (100 + $CheckHealthVoltagePercent)) do={
+        $SendNotification2 ({ origin=$FuncName; \
+          subject=([ $SymbolForNotification ("high-voltage-sign,chart-" . [ $IfThenElse ($NumLast < \
+            $NumCurr) "in" "de" ] . "creasing") ] . "Health warning: " . $Name); \
+          message=("The " . $Name . " on " . $Identity . " jumped more than " . $CheckHealthVoltagePercent . "%.\n\n" . \
+            [ $FormatLine "old value" ($CheckHealthLast->$Name . " V") 12 ] . "\n" . \
+            [ $FormatLine "new value" ($Value . " V") 12 ]) });
+      } else={ 
+        :if ($NumCurr <= $CheckHealthVoltageLow && $NumLast > $CheckHealthVoltageLow) do={ 
+          $SendNotification2 ({ origin=$FuncName; \
+            subject=([ $SymbolForNotification "high-voltage-sign,chart-decreasing" ] . "Health warning: Low " . $Name); \ 
+            message=("The " . $Name . " on " . $Identity . " dropped to " . $Value . " V below hard limit.") }); 
+        } 
+        :if ($NumCurr > $CheckHealthVoltageLow && $NumLast <= $CheckHealthVoltageLow) do={ 
+          $SendNotification2 ({ origin=$FuncName; \
+            subject=([ $SymbolForNotification "high-voltage-sign,chart-increasing" ] . "Health recovery: Low " . $Name); \ 
+            message=("The " . $Name . " on " . $Identity . " recovered to " . $Value . " V above hard limit.") }); 
+        }
+      }
+    }
+    :set ($CheckHealthLast->$Name) $Value;
+  }
+}