diff --git a/homeassistant/components/amcrest/binary_sensor.py b/homeassistant/components/amcrest/binary_sensor.py
index cfb61799be8..649258c42c7 100644
--- a/homeassistant/components/amcrest/binary_sensor.py
+++ b/homeassistant/components/amcrest/binary_sensor.py
@@ -8,6 +8,7 @@ import voluptuous as vol
 from homeassistant.components.binary_sensor import (
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_MOTION,
+    DEVICE_CLASS_SOUND,
     BinarySensorEntity,
 )
 from homeassistant.const import CONF_BINARY_SENSORS, CONF_NAME
@@ -32,15 +33,21 @@ _LOGGER = logging.getLogger(__name__)
 SCAN_INTERVAL = timedelta(seconds=BINARY_SENSOR_SCAN_INTERVAL_SECS)
 _ONLINE_SCAN_INTERVAL = timedelta(seconds=60 - BINARY_SENSOR_SCAN_INTERVAL_SECS)
 
+BINARY_SENSOR_AUDIO_DETECTED = "audio_detected"
+BINARY_SENSOR_AUDIO_DETECTED_POLLED = "audio_detected_polled"
 BINARY_SENSOR_MOTION_DETECTED = "motion_detected"
 BINARY_SENSOR_MOTION_DETECTED_POLLED = "motion_detected_polled"
 BINARY_SENSOR_ONLINE = "online"
 BINARY_POLLED_SENSORS = [
+    BINARY_SENSOR_AUDIO_DETECTED_POLLED,
     BINARY_SENSOR_MOTION_DETECTED_POLLED,
     BINARY_SENSOR_ONLINE,
 ]
+_AUDIO_DETECTED_PARAMS = ("Audio Detected", DEVICE_CLASS_SOUND, "AudioMutation")
 _MOTION_DETECTED_PARAMS = ("Motion Detected", DEVICE_CLASS_MOTION, "VideoMotion")
 BINARY_SENSORS = {
+    BINARY_SENSOR_AUDIO_DETECTED: _AUDIO_DETECTED_PARAMS,
+    BINARY_SENSOR_AUDIO_DETECTED_POLLED: _AUDIO_DETECTED_PARAMS,
     BINARY_SENSOR_MOTION_DETECTED: _MOTION_DETECTED_PARAMS,
     BINARY_SENSOR_MOTION_DETECTED_POLLED: _MOTION_DETECTED_PARAMS,
     BINARY_SENSOR_ONLINE: ("Online", DEVICE_CLASS_CONNECTIVITY, None),