ThinkGrow TDC 3 24” Daisy Chain Cord for Model One or ICL 300 LED Grow Lights Hydroponic Controls Proven Spectrum: Compare our plant The TrolMaster LMA 13 Proven Spectrum: Compare our plant growth spectrum to other lighting types 50 60Hz Certifications ETL FCC Degree of Ingress Protection IP20 Max Distance to Device to be Connected 1000 ft 300 meters Max Distance to Sensors to be Connected 1000 ft 300 meters Operating range Working Environments: Temperature: 31 104°F Humidity ≤90% What's included and one of the EC 120 or EC 240 power cables (120 or 240 volt) The TDC 1 power cord is used to connect to the main power source and to transfer data from the HCS lighting controller to the LED drivers