I feel anxious as the maintainer of the keypad, and that is goes down needing rebooting once per week. i am leaving for six weeks to hong kong.  so i've added this to the root crontab.
its should reboot itself every day at 5am. if this starts causing you trouble feel free to remove it.

0 5 * * * /sbin/shutdown -r now 2>&1 > /tmp/autoreboot.log