Yamaha ELITEEXEC2, 90 m, 2 channels, 256-bit AES, 100 - 240 V, 50/60 Hz, 177 x 177 x 53 mm Yamaha ELITEEXEC2. Wireless range: 90 m. Channels quantity: 2 channels, Security algorithms: 256-bit AES. Input voltage: 100 - 240 V, Input frequency: 50/60 Hz. Receiver dimensions (WxDxH): 177 x 177 x 53 mm, Receiver weight: 450 g