Wi-Fi, Tuya IOT, ZIGBEE gateway, RS485, with Relay for Switch/Light/curtains etc. 6'' IPS display, 1440*720 resolution, 2G+8G memory, support Wi-Fi, android 8.1 system, Quad core Cortex, 1.5GHZ CPU, 2x25W@4-8ohm, TI  amplifier, two way Blue-tooth, USB/TF, RJ45, Audio in, Audio out, 2 zone volume control, Timer function, Tuya Smart home control with RS485 port, remote control. AC110-250V

Two different versions: 1) With replay which can connect with switch 
                                      2) With Speaker background music system