SmartCast Wireless Dimming/Switching Interface, Less Than 1 WTT, 120 - 277 V, 10 AMP Maximum Inrush Current, Range: 30 FT In Typical Commercial Applications, 300 FT Open Air Without Obstructions, Control: 0 - 10 V Dimming, Network Devices: 250, Space: 100 Devices Maximum Per Group, 2.97 IN Height X 3.76 IN Width X 1.38 IN Depth Control Module, 3.39 IN Diameter X 2.97 IN Height Occupancy Sensor, C/US UL Listed, FCC Certified, IC Certified, For SmartCast Technology Enabled Devices