The 3014AB Filter Alarm (Smart Alarm) from Polylok is a wired indoor/outdoor filter alarm that provides audio/visual warning for home or business owners that their tank filter needs cleaning. The Smart Alarm Switch activates when the filter cartridge is near capacity (approximately 90 percent full) on solids that have built up through the filtering process. The Smart Alarm Switch, which is installed in the filter, sends a signal to the alarm panel activating the audible and visual alarm, alerting the home or business owner that the filter needs servicing. It offers manual alarm test switch and horn silence, an alarm horn rated to 82 decibels at 10 feet and 15 feet of cable with longer lengths available. 877/959-7751; www.polylok.com