https://devzone.nordicsemi.com/f/nordic-q-a/52140/app-timer-configurationsHi. I am using two application timers in my program, one timer ticks is fixed to 1000 means it will call its handler every second. The other timer ticks values I am changing so that I can call that timer handler at different specific times. Both the timersen-USTelligent Community 13Tue, 17 Sep 2019 17:58:32 GMThttps://devzone.nordicsemi.com/thread/210215?ContentTypeID=1Tue, 17 Sep 2019 17:58:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f7c6422e-964e-4df1-abce-5a4289e1c85aPKSHER<p>Yes I have change&nbsp;<span>APP_TIMER_CONFIG_RTC_FREQUENCY to 31 to get 1024 hz, although this low is not desired but I have just chosen the minimum.</span></p> <p><span>And you are saying I should set up my own RTC callback, but my program is running perfectly without any issues, so if I skip this, would it be a problem in the future?</span></p> <p><span>Regards,</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/210026?ContentTypeID=1Tue, 17 Sep 2019 08:28:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da0ff086-227d-4c5f-ad81-83089ec15d65haakonsh<p>You can set the prescaler by changing the frequency of&nbsp;APP_TIMER_CONFIG_RTC_FREQUENCY in sdk_config.h.<br /><br />Since this will have an&nbsp;unknown effect on all other libraries that uses the application timer, I suggest you set up your own RTC callback with the&nbsp;<a title="RTC driver" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/group__nrfx__rtc.html?cp=5_1_6_9_0_27_1">RTC driver</a>&nbsp;with the RTC2 instance.&nbsp;</p><div style="clear:both;"></div>