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===<center>:: Diagram ::</center>===
Will be based on simple ON/OFF switch triggered by opening & closing of umbrella.
Type of Switch Example
Push-Push Switch (e.g. SPST = ON-OFF)
This looks like a momentary action push switch
but it is a standard on-off switch: push once to switch on,
push again to switch off.
This is called the latching action.
Switch will be connected to the center of umbrella where all the metal wires join so that when it's totally expanded, it'll press the button, which turns on the heater. To turn off, the switch will needs to be pressed again, either manually or over-extending the umbrella to close it.
