How big is the Keypad? Follow The dimensions of the Keypad are 5.5" L x 3" W x 1" H. Facebook Twitter LinkedIn Comments 0 comments Article is closed for comments. Articles in this section What do I do if my Keypad status says offline or malfunction? What do I do if the Keypad status says tamper? What kind of batteries does my Keypad use? How do I turn on or off the LED for my Keypad? How big is the Keypad? What does the blue LED on my Keypad mean?