Supply voltage: 12V DC 3A. Operating temperature range: -10°C to +55°C. Power adapter x1 (US or EU plug avaliable). Coaxial cable BNC-BNC connector 2.5Mx5pcs. Item is defective broken or not as described.The item "OEM AC3 Active Antenna Combiner SENNHEISER Cmpatible KIT EW300 G3 G2 IEM A1031-U" is in sale since Monday, July 23, 2018. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Microphones & Wireless Systems". The seller is "ivn1" and is located in China. This item can be shipped worldwide.