Built-in 2x20W stereo Hi-Fi digital amplifier 5.5" TFT capacitance touch screen Music sources: Bluetooth, AUX input, Network radio, Network music, Local music Support Air Play, DLNA, Qplay function Android platform, support APP remote control Support intercom and paging function with other DM838II Support door bell linkage function With RS485 interface and I/O trigger function Support wired or wireless connection with the internet Built-in video player, support 1080P HD video display Independent timing schedule and the power off memory function Power supply: AC100V-240V/50Hz/60Hz, 1A