A lighting system comprising: a first lighting unit including one or more first LEDs , a pressure wave sensor , a first communication interface , and a first controller operably coupled with the one or more first LEDs, the pressure wave sensor, and the first communication interface, the first controller being configured to: receive a first signal from the pressure wave sensor, the first signal being representative of one or more pressure waves detected by the pressure wave sensor, determine, based on the first signal received from the pressure wave sensor, that the detected one or more pressure waves satisfy a predetermined criterion, and transmit, via the communication interface, notification that the predetermined criterion has been satisfied; and a second lighting unit including one or more second LEDs , a presence sensor , a second communication interface , and a second controller operably coupled with the one or more second LEDs, the presence sensor, and the second communication interface, the second controller being configured to: receive, from the first lighting unit via the second communication interface, said notification, and selectively energize the one or more second LEDs in response to receipt of the notification and to a signal from the presence sensor. a first lighting unit including one or more first LEDs , a pressure wave sensor , a first communication interface , and a first controller operably coupled with the one or more first LEDs, the pressure wave sensor, and the first communication interface, the first controller being configured to: receive a first signal from the pressure wave sensor, the first signal being representative of one or more pressure waves detected by the pressure wave sensor, determine, based on the first signal received from the pressure wave sensor, that the detected one or more pressure waves satisfy a predetermined criterion, and transmit, via the communication interface, notification that the predetermined criterion has been satisfied; and one or more first LEDs , a pressure wave sensor , a first communication interface , and a first controller operably coupled with the one or more first LEDs, the pressure wave sensor, and the first communication interface, the first controller being configured to: receive a first signal from the pressure wave sensor, the first signal being representative of one or more pressure waves detected by the pressure wave sensor, determine, based on the first signal received from the pressure wave sensor, that the detected one or more pressure waves satisfy a predetermined criterion, and transmit, via the communication interface, notification that the predetermined criterion has been satisfied; and a second lighting unit including one or more second LEDs , a presence sensor , a second communication interface , and a second controller operably coupled with the one or more second LEDs, the presence sensor, and the second communication interface, the second controller being configured to: receive, from the first lighting unit via the second communication interface, said notification, and selectively energize the one or more second LEDs in response to receipt of the notification and to a signal from the presence sensor. one or more second LEDs , a presence sensor , a second communication interface , and a second controller operably coupled with the one or more second LEDs, the presence sensor, and the second communication interface, the second controller being configured to: receive, from the first lighting unit via the second communication interface, said notification, and selectively energize the one or more second LEDs in response to receipt of the notification and to a signal from the presence sensor. <EOS>