diff --git a/frigate/__main__.py b/frigate/__main__.py
index 0d9a3dbe2..b36881151 100644
--- a/frigate/__main__.py
+++ b/frigate/__main__.py
@@ -1,14 +1,13 @@
 import faulthandler
+from flask import cli
 
 faulthandler.enable()
-import sys
 import threading
 
 threading.current_thread().name = "frigate"
 
 from frigate.app import FrigateApp
 
-cli = sys.modules["flask.cli"]
 cli.show_server_banner = lambda *x: None
 
 if __name__ == "__main__":
diff --git a/frigate/app.py b/frigate/app.py
index be581364f..9cb315bb4 100644
--- a/frigate/app.py
+++ b/frigate/app.py
@@ -1,12 +1,16 @@
 import json
 import logging
 import multiprocessing as mp
+from multiprocessing.queues import Queue
+from multiprocessing.synchronize import Event
+from multiprocessing.context import Process
 import os
 import signal
 import sys
 import threading
 from logging.handlers import QueueHandler
-from typing import Dict, List
+from typing import Optional
+from types import FrameType
 
 import traceback
 import yaml
@@ -16,7 +20,7 @@ from playhouse.sqliteq import SqliteQueueDatabase
 from pydantic import ValidationError
 
 from frigate.config import DetectorTypeEnum, FrigateConfig
-from frigate.const import CACHE_DIR, CLIPS_DIR, RECORD_DIR, PLUS_ENV_VAR, PLUS_API_HOST
+from frigate.const import CACHE_DIR, CLIPS_DIR, RECORD_DIR
 from frigate.edgetpu import EdgeTPUProcess
 from frigate.events import EventCleanup, EventProcessor
 from frigate.http import create_app
@@ -31,32 +35,27 @@ from frigate.stats import StatsEmitter, stats_init
 from frigate.version import VERSION
 from frigate.video import capture_camera, track_camera
 from frigate.watchdog import FrigateWatchdog
+from frigate.types import CameraMetricsTypes
 
 logger = logging.getLogger(__name__)
 
 
 class FrigateApp:
-    def __init__(self):
-        self.stop_event = mp.Event()
-        self.base_config: FrigateConfig = None
-        self.config: FrigateConfig = None
-        self.detection_queue = mp.Queue()
-        self.detectors: Dict[str, EdgeTPUProcess] = {}
-        self.detection_out_events: Dict[str, mp.Event] = {}
-        self.detection_shms: List[mp.shared_memory.SharedMemory] = []
-        self.log_queue = mp.Queue()
-        self.plus_api = (
-            PlusApi(PLUS_API_HOST, os.environ.get(PLUS_ENV_VAR))
-            if PLUS_ENV_VAR in os.environ
-            else None
-        )
-        self.camera_metrics = {}
+    def __init__(self) -> None:
+        self.stop_event: Event = mp.Event()
+        self.detection_queue: Queue = mp.Queue()
+        self.detectors: dict[str, EdgeTPUProcess] = {}
+        self.detection_out_events: dict[str, Event] = {}
+        self.detection_shms: list[mp.shared_memory.SharedMemory] = []
+        self.log_queue: Queue = mp.Queue()
+        self.plus_api = PlusApi()
+        self.camera_metrics: dict[str, CameraMetricsTypes] = {}
 
-    def set_environment_vars(self):
+    def set_environment_vars(self) -> None:
         for key, value in self.config.environment_vars.items():
             os.environ[key] = value
 
-    def ensure_dirs(self):
+    def ensure_dirs(self) -> None:
         for d in [RECORD_DIR, CLIPS_DIR, CACHE_DIR]:
             if not os.path.exists(d) and not os.path.islink(d):
                 logger.info(f"Creating directory: {d}")
@@ -64,7 +63,7 @@ class FrigateApp:
             else:
                 logger.debug(f"Skipping directory: {d}")
 
-    def init_logger(self):
+    def init_logger(self) -> None:
         self.log_process = mp.Process(
             target=log_process, args=(self.log_queue,), name="log_process"
         )
@@ -72,7 +71,7 @@ class FrigateApp:
         self.log_process.start()
         root_configurer(self.log_queue)
 
-    def init_config(self):
+    def init_config(self) -> None:
         config_file = os.environ.get("CONFIG_FILE", "/config/config.yml")
 
         # Check if we can use .yaml instead of .yml
@@ -100,9 +99,11 @@ class FrigateApp:
                 "read_start": mp.Value("d", 0.0),
                 "ffmpeg_pid": mp.Value("i", 0),
                 "frame_queue": mp.Queue(maxsize=2),
+                "capture_process": None,
+                "process": None,
             }
 
-    def set_log_levels(self):
+    def set_log_levels(self) -> None:
         logging.getLogger().setLevel(self.config.logger.default.value.upper())
         for log, level in self.config.logger.logs.items():
             logging.getLogger(log).setLevel(level.value.upper())
@@ -110,21 +111,23 @@ class FrigateApp:
         if not "werkzeug" in self.config.logger.logs:
             logging.getLogger("werkzeug").setLevel("ERROR")
 
-    def init_queues(self):
+    def init_queues(self) -> None:
         # Queues for clip processing
-        self.event_queue = mp.Queue()
-        self.event_processed_queue = mp.Queue()
-        self.video_output_queue = mp.Queue(maxsize=len(self.config.cameras.keys()) * 2)
+        self.event_queue: Queue = mp.Queue()
+        self.event_processed_queue: Queue = mp.Queue()
+        self.video_output_queue: Queue = mp.Queue(
+            maxsize=len(self.config.cameras.keys()) * 2
+        )
 
         # Queue for cameras to push tracked objects to
-        self.detected_frames_queue = mp.Queue(
+        self.detected_frames_queue: Queue = mp.Queue(
             maxsize=len(self.config.cameras.keys()) * 2
         )
 
         # Queue for recordings info
-        self.recordings_info_queue = mp.Queue()
+        self.recordings_info_queue: Queue = mp.Queue()
 
-    def init_database(self):
+    def init_database(self) -> None:
         # Migrate DB location
         old_db_path = os.path.join(CLIPS_DIR, "frigate.db")
         if not os.path.isfile(self.config.database.path) and os.path.isfile(
@@ -146,10 +149,10 @@ class FrigateApp:
         models = [Event, Recordings]
         self.db.bind(models)
 
-    def init_stats(self):
+    def init_stats(self) -> None:
         self.stats_tracking = stats_init(self.camera_metrics, self.detectors)
 
-    def init_web_server(self):
+    def init_web_server(self) -> None:
         self.flask_app = create_app(
             self.config,
             self.db,
@@ -158,16 +161,16 @@ class FrigateApp:
             self.plus_api,
         )
 
-    def init_mqtt(self):
+    def init_mqtt(self) -> None:
         self.mqtt_client = create_mqtt_client(self.config, self.camera_metrics)
 
-    def start_mqtt_relay(self):
+    def start_mqtt_relay(self) -> None:
         self.mqtt_relay = MqttSocketRelay(
             self.mqtt_client, self.config.mqtt.topic_prefix
         )
         self.mqtt_relay.start()
 
-    def start_detectors(self):
+    def start_detectors(self) -> None:
         model_path = self.config.model.path
         model_shape = (self.config.model.height, self.config.model.width)
         for name in self.config.cameras.keys():
@@ -214,7 +217,7 @@ class FrigateApp:
                     detector.num_threads,
                 )
 
-    def start_detected_frames_processor(self):
+    def start_detected_frames_processor(self) -> None:
         self.detected_frames_processor = TrackedObjectProcessor(
             self.config,
             self.mqtt_client,
@@ -228,7 +231,7 @@ class FrigateApp:
         )
         self.detected_frames_processor.start()
 
-    def start_video_output_processor(self):
+    def start_video_output_processor(self) -> None:
         output_processor = mp.Process(
             target=output_frames,
             name=f"output_processor",
@@ -242,7 +245,7 @@ class FrigateApp:
         output_processor.start()
         logger.info(f"Output process started: {output_processor.pid}")
 
-    def start_camera_processors(self):
+    def start_camera_processors(self) -> None:
         model_shape = (self.config.model.height, self.config.model.width)
         for name, config in self.config.cameras.items():
             camera_process = mp.Process(
@@ -264,7 +267,7 @@ class FrigateApp:
             camera_process.start()
             logger.info(f"Camera processor started for {name}: {camera_process.pid}")
 
-    def start_camera_capture_processes(self):
+    def start_camera_capture_processes(self) -> None:
         for name, config in self.config.cameras.items():
             capture_process = mp.Process(
                 target=capture_camera,
@@ -276,7 +279,7 @@ class FrigateApp:
             capture_process.start()
             logger.info(f"Capture process started for {name}: {capture_process.pid}")
 
-    def start_event_processor(self):
+    def start_event_processor(self) -> None:
         self.event_processor = EventProcessor(
             self.config,
             self.camera_metrics,
@@ -286,21 +289,21 @@ class FrigateApp:
         )
         self.event_processor.start()
 
-    def start_event_cleanup(self):
+    def start_event_cleanup(self) -> None:
         self.event_cleanup = EventCleanup(self.config, self.stop_event)
         self.event_cleanup.start()
 
-    def start_recording_maintainer(self):
+    def start_recording_maintainer(self) -> None:
         self.recording_maintainer = RecordingMaintainer(
             self.config, self.recordings_info_queue, self.stop_event
         )
         self.recording_maintainer.start()
 
-    def start_recording_cleanup(self):
+    def start_recording_cleanup(self) -> None:
         self.recording_cleanup = RecordingCleanup(self.config, self.stop_event)
         self.recording_cleanup.start()
 
-    def start_stats_emitter(self):
+    def start_stats_emitter(self) -> None:
         self.stats_emitter = StatsEmitter(
             self.config,
             self.stats_tracking,
@@ -310,11 +313,11 @@ class FrigateApp:
         )
         self.stats_emitter.start()
 
-    def start_watchdog(self):
+    def start_watchdog(self) -> None:
         self.frigate_watchdog = FrigateWatchdog(self.detectors, self.stop_event)
         self.frigate_watchdog.start()
 
-    def start(self):
+    def start(self) -> None:
         self.init_logger()
         logger.info(f"Starting Frigate ({VERSION})")
         try:
@@ -363,7 +366,7 @@ class FrigateApp:
         self.start_watchdog()
         # self.zeroconf = broadcast_zeroconf(self.config.mqtt.client_id)
 
-        def receiveSignal(signalNumber, frame):
+        def receiveSignal(signalNumber: int, frame: Optional[FrameType]) -> None:
             self.stop()
             sys.exit()
 
@@ -376,7 +379,7 @@ class FrigateApp:
 
         self.stop()
 
-    def stop(self):
+    def stop(self) -> None:
         logger.info(f"Stopping...")
         self.stop_event.set()
 
diff --git a/frigate/http.py b/frigate/http.py
index c3ae95d22..0b7d3deb0 100644
--- a/frigate/http.py
+++ b/frigate/http.py
@@ -141,7 +141,7 @@ def set_retain(id):
 
 @bp.route("/events/<id>/plus", methods=("POST",))
 def send_to_plus(id):
-    if current_app.plus_api is None:
+    if current_app.plus_api.is_active():
         return make_response(
             jsonify(
                 {
diff --git a/frigate/models.py b/frigate/models.py
index 05f4f6d82..8df85b7d8 100644
--- a/frigate/models.py
+++ b/frigate/models.py
@@ -1,9 +1,18 @@
 from numpy import unique
-from peewee import *
+from peewee import (
+    Model,
+    CharField,
+    DateTimeField,
+    FloatField,
+    BooleanField,
+    JSONField,
+    TextField,
+    IntegerField,
+)
 from playhouse.sqlite_ext import *
 
 
-class Event(Model):
+class Event(Model):  # type: ignore[misc]
     id = CharField(null=False, primary_key=True, max_length=30)
     label = CharField(index=True, max_length=20)
     sub_label = CharField(max_length=20, null=True)
@@ -24,7 +33,7 @@ class Event(Model):
     plus_id = CharField(max_length=30)
 
 
-class Recordings(Model):
+class Recordings(Model):  # type: ignore[misc]
     id = CharField(null=False, primary_key=True, max_length=30)
     camera = CharField(index=True, max_length=20)
     path = CharField(unique=True)
diff --git a/frigate/mypy.ini b/frigate/mypy.ini
index d8c34b966..c789241d0 100644
--- a/frigate/mypy.ini
+++ b/frigate/mypy.ini
@@ -1,7 +1,7 @@
 [mypy]
 python_version = 3.9
 show_error_codes = true
-follow_imports = silent
+follow_imports = normal
 ignore_missing_imports = true
 strict_equality = true
 warn_incomplete_stub = true
@@ -23,12 +23,32 @@ no_implicit_reexport = true
 [mypy-frigate.*]
 ignore_errors = true
 
+[mypy-frigate.__main__]
+ignore_errors = false
+disallow_untyped_calls = false
+
+[mypy-frigate.app]
+ignore_errors = false
+disallow_untyped_calls = false
+
 [mypy-frigate.const]
 ignore_errors = false
 
 [mypy-frigate.log]
 ignore_errors = false
 
+[mypy-frigate.models]
+ignore_errors = false
+
+[mypy-frigate.plus]
+ignore_errors = false
+
+[mypy-frigate.stats]
+ignore_errors = false
+
+[mypy-frigate.types]
+ignore_errors = false
+
 [mypy-frigate.version]
 ignore_errors = false
 
diff --git a/frigate/plus.py b/frigate/plus.py
index 5e74e7592..4e81ab393 100644
--- a/frigate/plus.py
+++ b/frigate/plus.py
@@ -1,12 +1,16 @@
 import datetime
 import logging
+import os
 import requests
+from frigate.const import PLUS_ENV_VAR, PLUS_API_HOST
+from requests.models import Response
 import cv2
+from numpy import ndarray
 
 logger = logging.getLogger(__name__)
 
 
-def get_jpg_bytes(image, max_dim, quality):
+def get_jpg_bytes(image: ndarray, max_dim: int, quality: int) -> bytes:
     if image.shape[1] >= image.shape[0]:
         width = min(max_dim, image.shape[1])
         height = int(width * image.shape[0] / image.shape[1])
@@ -17,45 +21,54 @@ def get_jpg_bytes(image, max_dim, quality):
     original = cv2.resize(image, dsize=(width, height), interpolation=cv2.INTER_AREA)
 
     ret, jpg = cv2.imencode(".jpg", original, [int(cv2.IMWRITE_JPEG_QUALITY), quality])
-    return jpg.tobytes()
+    jpg_bytes = jpg.tobytes()
+    return jpg_bytes if type(jpg_bytes) is bytes else b""
 
 
 class PlusApi:
-    def __init__(self, host, key: str):
-        self.host = host
-        self.key = key
-        self._token_data = None
+    def __init__(self) -> None:
+        self.host = PLUS_API_HOST
+        if PLUS_ENV_VAR in os.environ:
+            self.key = os.environ.get(PLUS_ENV_VAR)
+        else:
+            self.key = None
+        self._is_active: bool = self.key is not None
+        self._token_data: dict = {}
 
-    def _refresh_token_if_needed(self):
+    def _refresh_token_if_needed(self) -> None:
         if (
-            self._token_data is None
+            self._token_data.get("expires") is None
             or self._token_data["expires"] - datetime.datetime.now().timestamp() < 60
         ):
+            if self.key is None:
+                raise Exception("Plus API not activated")
             parts = self.key.split(":")
             r = requests.get(f"{self.host}/v1/auth/token", auth=(parts[0], parts[1]))
             self._token_data = r.json()
 
-    def _get_authorization_header(self):
+    def _get_authorization_header(self) -> dict:
         self._refresh_token_if_needed()
-        return {"authorization": f"Bearer {self._token_data['accessToken']}"}
+        return {"authorization": f"Bearer {self._token_data.get('accessToken')}"}
 
-    def _get(self, path):
+    def _get(self, path: str) -> Response:
         return requests.get(
             f"{self.host}/v1/{path}", headers=self._get_authorization_header()
         )
 
-    def _post(self, path, data):
+    def _post(self, path: str, data: dict) -> Response:
         return requests.post(
             f"{self.host}/v1/{path}",
             headers=self._get_authorization_header(),
             json=data,
         )
 
-    def upload_image(self, image, camera: str):
+    def is_active(self) -> bool:
+        return self._is_active
+
+    def upload_image(self, image: ndarray, camera: str) -> str:
         r = self._get("image/signed_urls")
         presigned_urls = r.json()
         if not r.ok:
-            logger.exception(ex)
             raise Exception("Unable to get signed urls")
 
         # resize and submit original
@@ -93,4 +106,4 @@ class PlusApi:
             raise Exception(r.text)
 
         # return image id
-        return presigned_urls["imageId"]
+        return str(presigned_urls.get("imageId"))
diff --git a/frigate/stats.py b/frigate/stats.py
index ed4797d32..4bbd5d6df 100644
--- a/frigate/stats.py
+++ b/frigate/stats.py
@@ -6,10 +6,15 @@ import psutil
 import shutil
 import os
 import requests
+from typing import Optional, Any
+from paho.mqtt.client import Client
+from multiprocessing.synchronize import Event
 
 from frigate.config import FrigateConfig
 from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
+from frigate.types import StatsTrackingTypes, CameraMetricsTypes
 from frigate.version import VERSION
+from frigate.edgetpu import EdgeTPUProcess
 
 logger = logging.getLogger(__name__)
 
@@ -20,14 +25,16 @@ def get_latest_version() -> str:
     )
     response = request.json()
 
-    if request.ok and response:
-        return response.get("tag_name", "unknown").replace("v", "")
+    if request.ok and response and "tag_name" in response:
+        return str(response.get("tag_name").replace("v", ""))
     else:
         return "unknown"
 
 
-def stats_init(camera_metrics, detectors):
-    stats_tracking = {
+def stats_init(
+    camera_metrics: dict[str, CameraMetricsTypes], detectors: dict[str, EdgeTPUProcess]
+) -> StatsTrackingTypes:
+    stats_tracking: StatsTrackingTypes = {
         "camera_metrics": camera_metrics,
         "detectors": detectors,
         "started": int(time.time()),
@@ -36,7 +43,7 @@ def stats_init(camera_metrics, detectors):
     return stats_tracking
 
 
-def get_fs_type(path):
+def get_fs_type(path: str) -> str:
     bestMatch = ""
     fsType = ""
     for part in psutil.disk_partitions(all=True):
@@ -46,7 +53,7 @@ def get_fs_type(path):
     return fsType
 
 
-def read_temperature(path):
+def read_temperature(path: str) -> Optional[float]:
     if os.path.isfile(path):
         with open(path) as f:
             line = f.readline().strip()
@@ -54,7 +61,7 @@ def read_temperature(path):
     return None
 
 
-def get_temperatures():
+def get_temperatures() -> dict[str, float]:
     temps = {}
 
     # Get temperatures for all attached Corals
@@ -68,29 +75,36 @@ def get_temperatures():
     return temps
 
 
-def stats_snapshot(stats_tracking):
+def stats_snapshot(stats_tracking: StatsTrackingTypes) -> dict[str, Any]:
     camera_metrics = stats_tracking["camera_metrics"]
-    stats = {}
+    stats: dict[str, Any] = {}
 
     total_detection_fps = 0
 
     for name, camera_stats in camera_metrics.items():
         total_detection_fps += camera_stats["detection_fps"].value
+        pid = camera_stats["process"].pid if camera_stats["process"] else None
+        cpid = (
+            camera_stats["capture_process"].pid
+            if camera_stats["capture_process"]
+            else None
+        )
         stats[name] = {
             "camera_fps": round(camera_stats["camera_fps"].value, 2),
             "process_fps": round(camera_stats["process_fps"].value, 2),
             "skipped_fps": round(camera_stats["skipped_fps"].value, 2),
             "detection_fps": round(camera_stats["detection_fps"].value, 2),
-            "pid": camera_stats["process"].pid,
-            "capture_pid": camera_stats["capture_process"].pid,
+            "pid": pid,
+            "capture_pid": cpid,
         }
 
     stats["detectors"] = {}
     for name, detector in stats_tracking["detectors"].items():
+        pid = detector.detect_process.pid if detector.detect_process else None
         stats["detectors"][name] = {
             "inference_speed": round(detector.avg_inference_speed.value * 1000, 2),
             "detection_start": detector.detection_start.value,
-            "pid": detector.detect_process.pid,
+            "pid": pid,
         }
     stats["detection_fps"] = round(total_detection_fps, 2)
 
@@ -118,10 +132,10 @@ class StatsEmitter(threading.Thread):
     def __init__(
         self,
         config: FrigateConfig,
-        stats_tracking,
-        mqtt_client,
-        topic_prefix,
-        stop_event,
+        stats_tracking: StatsTrackingTypes,
+        mqtt_client: Client,
+        topic_prefix: str,
+        stop_event: Event,
     ):
         threading.Thread.__init__(self)
         self.name = "frigate_stats_emitter"
@@ -131,7 +145,7 @@ class StatsEmitter(threading.Thread):
         self.topic_prefix = topic_prefix
         self.stop_event = stop_event
 
-    def run(self):
+    def run(self) -> None:
         time.sleep(10)
         while not self.stop_event.wait(self.config.mqtt.stats_interval):
             stats = stats_snapshot(self.stats_tracking)
diff --git a/frigate/types.py b/frigate/types.py
new file mode 100644
index 000000000..d65c601fb
--- /dev/null
+++ b/frigate/types.py
@@ -0,0 +1,28 @@
+from typing import Optional, TypedDict
+from multiprocessing.queues import Queue
+from multiprocessing.sharedctypes import Synchronized
+from multiprocessing.context import Process
+
+from frigate.edgetpu import EdgeTPUProcess
+
+
+class CameraMetricsTypes(TypedDict):
+    camera_fps: Synchronized
+    capture_process: Optional[Process]
+    detection_enabled: Synchronized
+    detection_fps: Synchronized
+    detection_frame: Synchronized
+    ffmpeg_pid: Synchronized
+    frame_queue: Queue
+    improve_contrast_enabled: Synchronized
+    process: Optional[Process]
+    process_fps: Synchronized
+    read_start: Synchronized
+    skipped_fps: Synchronized
+
+
+class StatsTrackingTypes(TypedDict):
+    camera_metrics: dict[str, CameraMetricsTypes]
+    detectors: dict[str, EdgeTPUProcess]
+    started: int
+    latest_frigate_version: str
diff --git a/frigate/watchdog.py b/frigate/watchdog.py
index da514e760..9f8b3f8d9 100644
--- a/frigate/watchdog.py
+++ b/frigate/watchdog.py
@@ -8,7 +8,6 @@ import signal
 from frigate.edgetpu import EdgeTPUProcess
 from frigate.util import restart_frigate
 from multiprocessing.synchronize import Event
-from typing import dict
 
 logger = logging.getLogger(__name__)
 
diff --git a/requirements-wheels.txt b/requirements-wheels.txt
index 94786bf53..2dd2356cc 100644
--- a/requirements-wheels.txt
+++ b/requirements-wheels.txt
@@ -11,7 +11,9 @@ peewee_migrate == 1.4.*
 psutil == 5.9.*
 pydantic == 1.9.*
 PyYAML == 6.0.*
+types-PyYAML == 6.0.*
 requests == 2.27.*
+types-requests == 2.27.*
 scipy == 1.8.*
 setproctitle == 1.2.*
 ws4py == 0.5.*