Wireless Motion Sensor LED Light - Motion Detector Alarm Chimes Door Sensor 500 FT Range Security Alert Monitor System for Home, Business, Store, Office, School

[58 Ringtones & 5 Volume Levels] The Security Alarm Detection Chime features 58 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. [Expandable Wireless Home Security] Flexible design according to your actual needs. You can choose the quantity of transmitter and receiver you like, which can be freely matched with each other. Each receiver of this motion sensor detects an alarm and can work with up to 20 motion sensors. [Super Long Receiving Range] The operating range between the receiver and transmitter is up to 500 ft, and the infrared sensor has a range of about 13- 16.5 ft, so when a thief tries to come, it will detect him and activate a 110 dB alarm.

[Easy to Install] The sensor is mounted and works with two AAA batteries (included), and the receiver plugs into a standard outlet. This doorbell motion detector security sensor can detect motion up to 110 degrees. [To Change Ringtone] 1. Press the volume button or down button to pick a ringtone; 2. Hold the volume button for 5 seconds or press the volume and down buttons briefly until the receiver "dings" and the LED flashes; 3. Wave your hand in front of the sensor to set the new ringtone