I brought this from BIQU, to install in my Bambu P1S printer.
It came with a QR code to scan for the instructions, but they were very unclear at best and completely confusing at worst.
I searched and found a simple understandable guide at:
https://m.youtube.com/watch?v=j6nr4F-siVI
The light once installed does illuminate the whole build plate. The light magnetically attaches (and comes with some 3M pads to stick it into the printer.) The wires from the light clip into a circuit board. To get to the circuit board you have to remove some thick tape / packing material (for which you will need a flat screwdriver to carefully prise off,) which covers a USB port. The product design looses a star, because I do not understand why this light could not be simply run off the USB port, fulfilling the claim that no tools are needed to install this.
Be aware - In the product description: "The Panda Lux draws 0.3A from the light bar connector. You should not exceed this. Plugging in both the Panda Lux and the stock light bar is therefore not recommended since your total current draw will exceed this."
With the instillation video above and some time and patience, it is an easy to medium difficulty install, for technical people. However once installed, the light is bright, works, and can be controlled via the Bambu handy app.