It is intuitive to the point of being psychic, channeling its knowledge and meaning from a spiritual source. What does 11 mean in Numerology? The most remarkable characteristic of the Master Number 11 is its connection to a higher source of wisdom.Using a flathead screwdriver, pop off the top cap of the recessed sensor found on the side of your door Pull the battery out of the case and replace with the new CR2 Lithium battery Click Here to chat with a Digital Life support (or call 85) to have your system placed in test mode to prevent a false alarm.Contact Us If you have questions, please call 1-87, TDD 1-86, Monday through Thursday from 8 a.m.8 Church Street, Suite 2 | Fishkill, New York 12524.