12V 4 Pin Led Metal Push Button Switch Momentary Power Switch Waterproof - £1.20 at Banggood
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12V 4 Pin Led Metal Push Button Switch Momentary Power Switch Waterproof - £1.20 at Banggood

12
Found 3rd Jan
Excellway Waterproof Push Button Switch for £1.20 at Banggood

When the voltage is higher than 12V, you need to add external resistor
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Good reviews especially from a recent purchaser called D. Trump. Said he installed it upside down so that the led looks like a mushroom cloud if ever lit up.
I want one but I don't know why!
InnovationS23 m ago

What is this for? Looks nice



To turn things on, or off.
12 Comments
Good reviews especially from a recent purchaser called D. Trump. Said he installed it upside down so that the led looks like a mushroom cloud if ever lit up.
Great, this looks awesome thank you!
Sell.Me31 m ago

Good reviews especially from a recent purchaser called D. Trump. Said he …Good reviews especially from a recent purchaser called D. Trump. Said he installed it upside down so that the led looks like a mushroom cloud if ever lit up.


Best post of 2018.
What is this for? Looks nice
InnovationS23 m ago

What is this for? Looks nice



To turn things on, or off.
I want one but I don't know why!
These are know as vandal proof switches.

A 0.25w 1K resistor will do for the led.
(12v-2.2v)/0.02 (20ma) = 490ohms
Edited by: "Gort1951" 3rd Jan
I feel like a raspberry pi project coming on
CoeK18 h, 20 m ago

To turn things on, or off.


That is good answer!
They normally advertise these as yacht accessories.
Says momentary Switch. Reading the description, does this mean once you let go of the button no through flow? I.e. not, push to turn on, then push again to turn off?
Edited by: "DerekDymond" 4th Jan
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