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) with solids built up through the filtering process. The Smart Alarm Switch installed in the filter sends a signal to the panel, activating the audible and visual alarm to alert the home or business owner that the filter needs servicing. It offers a manual alarm test switch and horn silence, an alarm horn rated to 82 dB at 10 feet and 15 feet of cable, with longer lengths available. 877-765-9565; www.polylok.com.