This service doesn't work with anything but a hardwired landline or you have to upgrade your service to $55/month and pay for new equipment. I tried to cancel the contract I signed with a different company 12 years ago which they bought out & coincidently had automatically renewed for another 3 years just 2 weeks ago. They did me" the favor" of only charging me a 3 month penalty for cancelling a service that was unable to be monitored anymore by protection 1. Switched to ADT for free & lowered my monthly payment by $10 a month.