diff --git a/main.py b/main.py
index 3cac9ac..1b022b3 100644
--- a/main.py
+++ b/main.py
@@ -2,6 +2,8 @@ import os
 import sys
 import asyncio
 import aiohttp
+import RPi.GPIO as GPIO
+import time
 from aiohttp import ClientSession, CookieJar
 
 import settings
@@ -11,12 +13,25 @@ from pyunifiprotect.unifi_protect_server import UpvServer
 import logging
 logger = logging.getLogger(__name__)
 
+RELAY_ON = False
+RELAY_OFF = True
+
+def ring_bell(mac):
+    try:
+        doorbell = settings.DOORBELLS[mac]
+        GPIO.output(doorbell['gpio'], RELAY_ON)
+        time.sleep(0.5)
+        GPIO.output(doorbell['gpio'], RELAY_OFF)
+    except KeyError:
+        logger.error('Doorbell %s not found!', mac)
+
 def subscriber(updated):
     logger.debug('Subscription: updated=%s', updated)
 
     for _, data in updated.items():
         if data['event_type'] == 'ring' and data['event_ring_on']:
-            logger.info('%s is ringing!', data['name'])
+            logger.info('%s: %s is ringing!', data['mac'], data['name'])
+            ring_bell(data['mac'])
 
 async def ws_listener():
     session = ClientSession(cookie_jar=CookieJar(unsafe=True))
@@ -40,6 +55,14 @@ async def ws_listener():
     await session.close()
     unsub()
 
+def init_relays():
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setwarnings(False)
+
+    for _, doorbell in settings.DOORBELLS.items():
+        GPIO.setup(doorbell['gpio'], GPIO.OUT)
+        GPIO.output(doorbell['gpio'], RELAY_OFF)
+
 if __name__ == '__main__':
     logging.basicConfig(level=logging.INFO)
     loop = asyncio.get_event_loop()