AVTECH's Light Tower & Relay Adapter is required to connect the Light Tower, Light Tower w/Audio or Relay Switch Sensor to AVTECH's Room Alert 32W, 32E, 12E or 3E. This adapter also includes a relay switch that can be used to turn on/off low voltage devices via the Room Alert web interface, Device ManageR or automatically in response to an alarm condition going in or out or an alert stage.