Complex sentence: The pager may be reset back into its standby mode by pressing the reset button, or it can be programmed to reset back into the standby mode automatically after a predetermined amount of time, to conserve battery power.
Split into simpler sentences: The pager may be reset back into its standby mode by pressing the reset button. Or it can be programmed to reset back into the standby mode automatically after a predetermined amount of time, to conserve battery power.