1、POE PORT COMMUNICATE: 8 channel Ethernet relay module, RTU/TCP protocol, PoE port communicate, with various isolation and protection circuits, industrial grade rail mount case. 2、FLASHING FUNCTION: 8 channel ethernet relay module has the function of flashing on and flashing off, by passing the parameter to the command, it can turn on the relay for a period of time, and then turn off automatically. 3、STABILITY: Ethernet relay module is ideal for industrial control equipment and applications with high communicate requirements due to its fast communicate speed, stability, reliability and safety. 4、DC 7 TO 36V: PoE port ethernet relay module supports DC 7 to 36V wide range power input and PoE power supply, supports relay control via MQTT protocol, comes with MQTT application demo. 5、ANTI REVERSE CIRCUIT: On board optocoupler isolation prevents the relay from being interfered by high voltage circuits. Anti reverse circuit to prevent accidental damage to the circuit due to incorrect connection.