Arduino can turn on a mag lock but not disable it?


i have arduino uno set digitally control when magnetic lock enabled or disabled through digital pins.

i have digital pin going through 1m resistor, lets me have maglock off while digital pin set output, low. if turns input, high, maglock enable. if change input, high output, low, still holds charge , won't disable.

what can fix that?

thanks.

please post schematic of connections , data sheet maglock. 


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