Door bell timer using 555 IC?

[Keithstv]

I can't see anything wrong with the basic circuit but I would put a 10k resistor in series with the variable as the 555 could be damaged if the pot is at minimum resistance. I always decouple pin 5, 10nF should be OK.

Is the relay turning on when power is applied? If so does it turn off after about 3 seconds?

Keith