I have a Sentry with a similar keypad, when I fist got it I had to call customer service because it would not open. Long story short I had to get Duracell or Energizer batteries, wont work with any other brand.
What the hell is so hard about posting a pic on this site???????? If I open an ad and there is no pic, I immediately hit the back button.
Come on folks, its not rocket science.