【4 LED Indicator for Visual Alerts】 Built-in LED indicator visually signals when sensor is triggered, with option to synchronize sound alerts, providing an extra layer of awareness. This wireless doorbell ringer also offers a vibration function that is an excellent choice when you need to be alerted without creating noise. Elevate your security game with motion sensor alarm and door chime. It's a solution for monitoring entrances, ensuring your property remains secure and well-protected. 【17 Ringtones & 5 Volume Levels】Motion alarms detection chime has 17 ringtones and 5 adjustable volume levels for personal preferences. When the alert system receiver receives the signal from the motion sensor detector, the LED indicator light will flash. With an extensive selection of 17 distinct ringtones and 5 adjustable volume levels, you can set the perfect tone and volume for your specific needs. Whether you want a gentle chime or a loud alert, this doorbell has you covered. 【Effortless Setup &