How long is the power cord to the Siren+Keypad? Jon Dennis Cruz April 01, 2021 10:51 Updated The power cord for the Siren+Keypad is 2 meters or 78 inches. Related articles Is the Siren+Keypad battery operated? I’m concerned about privacy and the Siren listening in on me. What do you have to say to that? Comments 0 comments Please sign in to leave a comment.