Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
You'll need to grasp the outer round part of the keypad, give it a quarter turn to the right, and pull straight back. This will give you access to replace the 4 AA batteries there.
Let me know if you are able to get it open.
Hello, it appears your question is still open.Do you need more help with this?If so, just reply back on this page. If I’ve answered your question, please let me know to conclude our session.Please note: You have already paid your fee to the site; I'd like to help you and provide value for that fee, but I do need to communicate with you here to do so.Nathan