What is the size of the Keychain Remote? Follow The dimensions of the Keychain Remote are 2.50” H x 1.25” L x 0.50” W. Facebook Twitter LinkedIn Submit feedback Comments 0 comments Article is closed for comments. Articles in this section Keychain Remote User Guide What do the buttons on my Keychain Remote mean? Can I change the battery in my Keychain Remote? How do I trigger a panic alarm from my Keychain Remote? What is the size of the Keychain Remote? How can I tell if my system armed after I press a button on my Keychain Remote? Can I check if my system is armed or disarmed from my Keychain Remote on my Customer Portal? Can I arm my system with no entry delay from the Keychain remote? Can I arm silently from my Keychain Remote? What do I do if I am pressing the buttons, but the system isn’t responding?