EATON HOME HEARTBEAT WATER SHUT-OFF CONTROLLER USES TO SHUT OFF WATER IN RESPONCE TO LEAKS FROM HOME APPLIANCES AND PRODUCTS CONNECTED TO MAIN WATER LINES THE USE OF THIS PRODUCT REQUIRES THE INSTALLATION OF: THE HOME HEARTBEAT STARTER PACK, AT LEAST ONE HOME HEARTBEAT SENSOR, WHICH ACTS AS A "CONTROLLER" TO TRIGGER AN ALERT AND CLOSE THE WATER SHUT-OFF CONTROLLER (EATON RECOMMENDS WATER SENSORS AND ATTENTION SENSORS) A HOME HEARTBEAT BRASS BALL VALVE (NOT INCLUDED), THROUGH WHICH THE WATER SHUT-OFF CONTROLLER IS CONNECTED TO THE MAIN WATER LINE. THE BALL VALVE MUST BE PRE-INSTALLED AT LEAST 18" DOWNSTREAM FROM FROM A WATER LINE AND WITHIN 8 FEET OF A POWER OUTLET. *KEY NOT INCLUDED* CAT# HHBWSOCONTROL