from machine import Pin
from time import sleep

#active relay using Pin 1

RLY = Pin(1,Pin.OUT)    #ESP1 set as output for relay control
RLY.off()   #reset PIN to native state

BTN = Pin(2,Pin.IN, Pin.PULL_UP) #pull up stops erratic triggeruing due to electrical noise


while True:

    if not BTN.value():   # same as BTN.value() == 0
        RLY.on()
        sleep(0.05)
        RLY.off()