Since 1978, CMS has been providing high-quality monitoring nationwide. Today, Criticom Monitoring Services is one of the largest wholesale alarm monitoring companies in the U.S., serving more than 4,000 alarm companies and their 800,000 customers. Its broad range of monitoring services include response to security, fire, personal emergency response systems (PERS), environmental, interactive services, two-way voice, mPERS and video. CMS has three UL-listed, FM-approved monitoring centers, located in California, Florida and New Jersey, networked together to provide true national redundancy and best-in-class disaster recovery.