Wide voltage input, input voltage: dc 7v-dc 30v.
Input overpressure protection, input with tvs, voltage over 33 v, automatic protection.
Input overcurrent protection.

220v 10a relay, one open and one closed, with the following parameters:
All the way optically coupled isolation input, input with tvs protection.

A large current terminal.
An output state indicator, an input state indicator.
Relay pcb foot anti-creep electrical design, safer.

Server control can be accessed by tcp client.
Control can be achieved through http protocol.
Plate size, 65mm x 40mm x 20mm.