Patent ID: 8068787

Claim:
A power supply device adapted to an outdoor wireless communication device via a network cable, the outdoor wireless communication device including a main board having at least one control line and a ground line arranged thereon, the power supply device comprising: a data input port; a power over Ethernet control module configured for receiving a data signal from the data input port to generate a data signal with power; a network port configured for transmitting the data signal with power to the main board of the outdoor wireless communication device and receiving a signal in relation to a signal receiving strength state of the outdoor wireless communication device provided from the at least one control line and the ground line arranged on the main board; a decoder circuit connected to the network port and configured for generating a signal strength indicator signal according to the signal provided from the at least one control line and the ground line; and a signal strength indicator unit connected to the decoder circuit and configured for receiving the signal strength indicator signal to display the signal receiving strength state of the outdoor wireless communication device.