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What's the most reliable way to check if a door of a cabinet is closed?

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redgear:
Hi all,

I am building  a UVC Sanitizer Cabinet. Since, UVC rays are very harmful for human beings, I want to restrict the circuit to work only when the door of the cabinet is closed. What's the most reliable way to do it? I thought of using two contact switches in series such that they are ON only when the door's closed. I would like to know about other reliable techniques  that I can use.


Thanks

sahko123:
Large microswitches generally have screw mounting holes to place on the door in place where it can only be activated if the door is closed. Then connect the switch to power or to a relay capable of handling power

Gyro:
It would be better to keep all of your UVC cabinet stuff in the same thread - people have more context and you have less explaining to do.  :)

MarkR42:
Depends who you are trying to defend against.

It's easy to put a switch (or several switches) to defend against accidental mistakes, much harder against a determined abuser.

If you're looking for a non-contact solution maybe hall effect sensors and small magnets, at least two of them (to prevent it instantly turning on if the user accidentally brings a magnet close to one sensor)

But to defend against a really determined abuser, I think a mechanical solution, like an odd-shaped pin going into a hole with a microswitch, would be better.

redgear:

--- Quote from: sahko123 on June 24, 2020, 09:46:26 am ---Large microswitches generally have screw mounting holes to place on the door in place where it can only be activated if the door is closed. Then connect the switch to power or to a relay capable of handling power

--- End quote ---
Thanks, connecting to a relay would be a better option if I am not wrong, since I can get a low power rated switch. Also, I would have integrate this with a timer relay, so connecting the switch to a relay seems like the correct choice.


--- Quote from: Gyro on June 24, 2020, 10:07:13 am ---It would be better to keep all of your UVC cabinet stuff in the same thread - people have more context and you have less explaining to do.  :)

--- End quote ---
Alright, I will keep all further questions in the previous thread.


--- Quote from: MarkR42 on June 24, 2020, 10:57:26 am ---But to defend against a really determined abuser, I think a mechanical solution, like an odd-shaped pin going into a hole with a microswitch, would be better.

--- End quote ---
Thanks, Is there a microswitch like that in the market? Would be great if you can link to them.

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