Model No. FS12NPT;Motorized Lead-Free, CNC-machined, Full-Port Ball Valve (1/2 inch NPT pipe threaded);Control Unit is powered by the included AC power supply. Optionally, it may be powered with 4 AA batteries (not included). *Batteries used in conjunction with the AC power supply provide backup should AC power fail;Water/Leak Sensor (1.25" X 7.5");Includes screws and drywall anchors, plus a hook and loop, self-adhesive mounting pad for multiple mounting options;Floodstop’s pigtail ties into Building Maintenance Systems (BMS) and sends a relay to notify of alarm and valve closure;One year warranty