A Comcast Customer Security Assurance Phone Scam Alert for our security customers in Central Illinois.
CIS is proud to sponsor the RE/MAX Professionals Springfield IL Trunk or Treat on October 19, 2021.
If your security system uses cellular monitoring, the 3G-4G-CDMA sunset transition may compromise your protection. Learn how CIS will keep you safe.
Wondering how the new 10-digit dialing requirement for area code 217 affects your security and fire systems? Don't worry, CIS has you covered!
Rest assured CIS has appropriate COVID-19 safeguards in place to continue providing expert service and support to your organization.