diff --git a/server/tasks/timer.js b/server/tasks/timer.js
index 964c675c..728cdc10 100644
--- a/server/tasks/timer.js
+++ b/server/tasks/timer.js
@@ -3,11 +3,32 @@ const schedule = require('node-schedule');
 
 let job;
 
-module.exports.startTimer = () => {
-    const rule = new schedule.RecurrenceRule();
-    rule.minute = 0
+module.exports.startTimer = (timeLevel) => {
+    job = schedule.scheduleJob(getRuleFromLevel(timeLevel), () => this.runTask());
+}
 
-    job = schedule.scheduleJob(rule, () => this.runTask());
+const getRuleFromLevel = (level) => {
+    const rule = new schedule.RecurrenceRule();
+
+    switch (level) {
+        case 1:
+            rule.second = 0;
+            break;
+        case 2:
+            rule.minute = [0, 30]
+            break;
+        case 3:
+            rule.minute = 0;
+            break;
+        case 4:
+            rule.hour = [0, 3, 6, 9, 12, 15, 18, 21];
+            break;
+        case 5:
+            rule.hour = [0, 6, 12, 18];
+            break;
+    }
+
+    return rule;
 }
 
 module.exports.runTask = async () => {
@@ -20,7 +41,10 @@ module.exports.runTask = async () => {
 }
 
 module.exports.stopTimer = () => {
-    job.gracefulShutdown();
+    if (job !== undefined) {
+        job.cancel();
+        job = undefined;
+    }
 }
 
 module.exports.job = job;
\ No newline at end of file