Chauvet DJ D-Fi XLR RX; Battery-powered wireless D-Fi receiver provides instant wireless communication; Plugs directly into your device s XLR port; Receives DMX and master/slave signals between similar fixtures; LED indicators visually show wireless channel operation; Works without the need of an external power supply; Fully FCC/RTTE compliant; Max Unobstructed Distance: 165 ft (50 m); Maximum Run Time: up to 10 hours; Recharge Time: 2.5 hours; Operating Frequency: 2.412 to 2.484 GHz; Input Voltage: 5 VDC, 500 mA; Weight: 1.6 oz. (45 g); Size: 3.5 x 1 x 1.14 in (88 x 27 x 29 mm); Approvals: CE, FCC, RTTE; RF output: 12.72 dBm