Making the Right Power System Architecture Selection Smart Tech 21 is the leading company for power backup and optimization for HFC networks. The Smart Power Switch Multifunction (“SPSM”) was designed to reduce or eliminate the need for standby power supplies that use batteries, inverters and require constant maintenance. The introduction of the SPSM provides CATV operators with a cost effective way to implement standby powering with a combination of standby and non-standby power supplies reducing the need for maintenance, batteries, approximately by 50%, or by using 100% non-standby power supplies with and the SPSM. More information can be found on our website.