Although the device seems to function as advertised, it is difficult to determine which wavelengths radiate based on Mode Switch settings, of which there are only 2. A few minutes experimenting with the device and comparing the manual are required.
I am a handy guy and it took awhile to figure out the door mount. Photos included of the solution:
1) Install two little mounting screws that form a yoke in the TOP of the panel (the screws will fit in several threaded holes in back of the panel; ignore those holes). If you have threadlocker, a drop on each screw seems like cheap insurance to me.
2) Hook the door bracket over the top of the door.
3) Examine the pulley/ string combination device. There are 2 tiny snap links: One on the ratcheting pulley, and one on the free end of the cord. Clip the tiny snap link on the end of the cord over the knobby protrusion on the door hook.
4) Examine the ratcheting pulley. On one side is a tiny clutch that will allow you to pull the cord through the pulley, locking it in place when you release the clutch.
5) Place the light panel on the floor underneath the pulley, and if needed release the clutch to drop the pulley until you can hook the tiny snap link on the ratcheted pulley to the tiny snap link on the light panel yoke.
6) Carefully raise the light panel by pulling the free end of the cord IWTHOUT releasing the clutch just an inch, and ensure the clutch is going to hold the panel up and not malfunction. You should hear little clicks as you pull the cord through the pulley. If it works, you are done.
I believe the clutch is going to wear the cord over time, so remain alert for signs of fraying on that cord. Early replacement of a frayed cord is likely the remedy for a potential $950 experiment in gravity.
I am unhappy with that hanging system. A very expensive panel is dangling from a single length of string, the failure of which will likely destroy that panel. I intend to develop an articulated frame, which SHOULD be a manufacturer option/upgrade/whatever they call extras these days, to allow raising, lowering, rotating and tilting the panel more easily than raising and lowering the panel on a string. If I actually follow through with that, I will update this and include a plan and materials list.
All that said, I look forward to starting red light therapy as part of my routine.