Smart thinking with the Sentry Mode. Keeping it plugged in while you're away for a month is the key, otherwise, it'll drain your battery pretty quickly. As long as you're plugged in, Sentry Mode should be good to go. Just make sure the outlet you're using is reliable and can handle the continuous draw, and maybe double-check your condo's rules about long-term EV parking/charging. You might also want to adjust Sentry Mode's settings to minimize power consumption if you're worried like reducing the recording frequency or turning off certain features. That way, you get the security without the stress of a dead battery when you get back.