This is a KIT - DIY you will need to assemble and program the device. You will get a download code once you purchase it.
It can be powered from any USB device such as a computer, power bank or wall usb power adapter. It takes very minimal power.
The LED is red and very bright - easily seen during a bright day.
If you wish to change the SSID (wifi name) and password to a custom one you would need to download Arduino software and download our code and reprogram it to your info.
Includes:*NodeMcu*8X32 Red LED Matrix*Micro USB Cable
DIN - D7CS - D3PIN - 14VCC - 3VGRD - G