Medic Grow GLC-1 LED Grow Light ControllerProduct Features for Medic Grow LED Grow Lights: No need for a switchboard Set output levels from 10% to 100% Temperature and humidity sensors with solid cable connection or Bluetooth communication App operation on the phone to master controller via Bluetooth Easy and safe installation (low voltage device) Protected against short circuit Double temperature safety feature Control up to 100 ballasts Show output as W or % Auto shut down at temperature