1、18 Pin Terminal: There are 2pcs 18PIN GPIO interface terminal, which support 16 channels of input and of output, with optocoupler isolation function. 2、Optocoupler Isolation: Optocoupler isolation circuit ensures no direct electrical connection between the two isolated circuits, preventing interference caused by electrical connections, especially between low voltage control circuits and external high voltage circuits. 3、4 Way Standard POE: 5pcs for Intel Gigabit Ethernet ports, support 4 way 802.3af standard POE network port. POE refers to the use of IP based terminals without making any changes to the existing Ethernet Cat.5 technology that can provide DC power supply for such devices while transmitting data signals. 4、POE Technology: Can ensure the normal operation of the existing network while ensuring the security of the existing structured cabling, providing efficiency and cost savings. 5、Low in Noise: The whole machine has no fan design, all aluminum chassis for heat dissipation, the heat dissipation effect is more outstanding, and it is also dustproof, shockproof, and anti electromagnetic interference.