Inon strobes have a black plastic disc on the surface of the battery compartment. The disc is on the bottom of the battery compartment of the D2000, D200, Z240 and Z330 strobes, and on the side of the S2000 battery compartment. It is not mentioned in the User manuals, and as far as I know, is anonymous, bears no logo, does nothing and causes no problems. It has no personality, it is just there.
Some have speculated it may be a pressure relief valve.
Recently I have examined some old and some flooded Inon strobes and found that the black disc was not damaged, loosened or affected by age or flood water, and had not functioned as a relief valve.
What then is the function of this black disc? It does not move, cannot be unscrewed or pried off and is not connected to a structure or working strobe part. It is not a base plate for the vertical screw rod inside the battery compartment, as it is not connected to, or even aligned with the base of this rod. There is no inside hole for it to plug or act as a valve. It just exists as a flat, round, black plastic disc.
To me the reason for, or function of, this Inon strobe black disc is a mystery.
Could it be an ornamental medallion?
What am I missing?
What is the guess or opinion, casual or informed, of the Wetpixel experts?
Edited by Kraken de Mabini, 20 June 2019 - 08:12 AM.