Features : 1) RS232 serial port or Gigabit Ethernet port communication; 2) Connected via Ethernet port before the first receiving card, between any two receiving cards, or after the last receiving card 3) Timer function, able to replace a timer and delayer 4) Temperature detection of the power distribution box 5) 8x Channels of power switch control 6) 4x Sensor ports to connect light sensors for automatic brightness adjustment, or connect other peripherals, such as temperature sensors 7) 1x Audio output port