Dean Pichon
Well Known Member
Last year, I started using a GSM Controller to control the heat in my hanger. As cold weather approaches, I need to reactivate the SIM card. The AT&T sim card I used last year will cost at least $25 (a lifetime of turning on and off the heat) but the account expires after only 90 days. Has anyone found an inexpensive source of minutes/msg units that have a relatively long "shelf life"? (Ideally, I would like something that lasts 6 months or so, so I don't have to spend time messing with sim cards...)
Thanks,
Thanks,