如何在条件完成时不断检查一个值并打破一个bucle？

如何解决如何在条件完成时不断检查一个值并打破一个bucle？

我正在使用 PIR 传感器、Firebase、MITappInvetor 和我的树莓做一个 DIY 警报系统。但是我在处理 bucles 之类的东西时遇到了麻烦。

我想通过更改 firebase 中的值来使用 MITapp 来打开和关闭警报，但我被困在了可以关闭警报但无法再次打开它的地方，反之亦然。

from gpiozero import MotionSensor,Buzzer
import board
import neopixel
from time import sleep
import pyrebase
import json
config = {
    "apiKey": "LOL","authDomain": "LOL","databaseURL": "LOL","projectId": "LOL","storageBucket": "LOL","messagingSenderId": "LOL","appId": "LOL"
      }
firebase = pyrebase.initialize_app(config)
db=firebase.database()
pixels = neopixel.NeoPixel(board.D21,1)
pirs = MotionSensor(4)
buzzer = Buzzer(16)
buzzeron = Buzzer(20)
buzzeron.on()                                                                                                      

def DET(): #When it detects something it does this.
   
    pixels[0] = (255,0)
    print("MOVIMIENTO")
    data = "DET"
    db.child("ALARM").set(data)
    buzzer.beep()
   
def NODET(): #When it does not detect something it does this.
   
    pixels[0] = (0,255,0)
    print("NADA")
    data = "NODET"
    db.child("ALARM").set(data)
    buzzer.off()

check = db.child("SISUFV").child("CHECK").get()
pr = (check.val())
print (pr) #this is for the database value,it can be ON or OFF

on = ('"ON"')
off = ('"OFF"')
while True:
    while True:
        if pr == off : 
            sleep(1)
        if pr == on :
            print('"ON"')
            pirs.wait_for_motion()
            DET()
            pirs.wait_for_no_motion()
            NODET()
            check = db.child("SISUFV").child("CHECK").get()
            pr = (check.val())
            print (pr)
            if pr == off :
                break