I agree with ak's comments. I have not seen any information to say if it battery or mains powered so I chose a high vajue resistor. If you use high value resistors I suggest mounting the mosfet very close to the reed switch so there are no long wires to the mosfet gate terminal to pick up electrical noise. If it is mains powered then use a lower value resistor.

Les.

 

You say in post #10 that the LEDs are rated at 20 mA but you also say that they have a built in 130 ohm resistor. Assuming that these are white LEDs their forward voltage will be about 3.3 volts which means there will be 8.7 volts across the 130 ohm resistors so he current through the LEDs will be 8.7/130 = 67 mA which is more than 3 times their current rating
If you use 100K resistors to the mosfet gates while the doors are closed (LEDs off.) it will consume 0.038 KWH per year. ( It would be 0.38 KWH per year if you use 10K resistors.) Both of those values would probably be less than the loss in the 12 volt power supply.

Les.

These LED's run on 12VDC, dropping the voltage below ~9.5V and they do not light up. I was even planning on adding an extra 47 Ohms in series to all LED's to remove any stress they may have. I am certain they are not Top-notch LED's. My comments on the power consumption og the MOSFET was in jest. I can certainly live with 0.038KWH, or 0.38KWH.

@AnalogKid
Will likely change the 100k resistor to something between 1.5k & 10k...if I decide to implement the fix. I had already ordered 4 N.O./N.C. reed switches w/magnets. Amazon gave me credit for the other switches as they had been listed in a photography category on their site, making them nonreturnable. So now I have 10 N.O. reed switches w/magnets waiting for when I want to add some security to my home!

Will definitely keep the concept here available for future use, just don't want to have to climp under the counters to splice wires and muck-up the simplicity.