Multiple units can operate as one system, when one unit detects motion all units on same code turn on at the same time Sends and responds to extended X10 "hail acknowledge" 2-way code Turn all floodlights throughout your house on when any of the motion sensors detect motion. This redesigned Leviton X10 Motion Detector has a feature not available on the X10 PIRs. Multiple units set to the same house code and unit code operate as one system. This is achieved by the fact that these units send the X10 "hail acknowledge" code every 6 seconds while motion is sensed, triggering a two-way response. When these units receive the proper signal, they will all turn on (or reset their timed off if they are already on).
