· Features an onboard voltage regulator chip, supporting a wide input voltage range of 7V-36V as well as Power over Ethernet (PoE). · Supports control via the MQTT protocol; includes sample application routines for Alibaba Cloud MQTT. · Integrates onboard power isolation, providing a stable isolated voltage supply without the need for an external power source at the isolated end. · Inputs feature bidirectional optocoupler isolation, supporting both passive and active digital switch inputs; includes a built-in debouncing algorithm. The relay supports control via either a switch-input linkage mode or a toggle mode. · Outputs utilize Darlington transistors with optocoupler isolation, offering enhanced driving capability with a sink current of up to 500mA, and feature built-in flyback diode protection. Color: Black Material: plastic Package Contents: 1*Ethernet Relay Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.