The device makes beeping noises when arming and will beep faster as your security system gets closer to its armed state. Beeping will stop when the system is armed. Why won’t my Centralite Keypad light up? Check the proximity sensors by waving your hand in front of the device.Click to see full answer. Correspondingly, why does my Xfinity alarm keep beeping?Most often this is due to a loose sensor or a faulty battery. Household alarms have a display screen on the main control panel that indicates which sensor is causing the beeping. To fix a house alarm system that keeps beeping sometimes requires bypassing the zone that the sensor is in altogether for a short time.One may also ask, why does my alarm keep beeping? The battery drawer must be completely closed for the battery to make contact with the terminals. As the battery in a smoke alarm becomes weak, the smoke alarm will “chirp” about once a minute to alert you that the battery needs to be replaced. Note: Only the alarm with a low battery will chirp. Herein, how do I get my security alarm to stop beeping? How to Stop Your Security Alarm from Beeping Locate the source of the beeping. Call your alarm monitoring company. Check the alarm system battery. Disarm the alarm system. If all else fails, call a technician. How do I turn off the alarm on my Comcast keyboard? For an SMC Wireless Keypad: Enter a valid keypad code. Press the button for the Armed mode (Arm Away or Arm Stay) that you want to activate. The Lock button turns red for three seconds to indicate that the Exit Delay has started. In Arm Away mode, the Exit Delay tone sounds from the touchscreen.