General description This Wireless Motion Sensor Door Chime is designed to enhance security and convenience in various settings, including homes, offices, businesses, schools, and more. It features a motion sensor alarm and door chime that ensures your property remains secure and well-protected. With 17 distinct ringtones and 5 adjustable volume levels, you can customize alerts to suit your preferences. The built-in LED indicator provides visual alerts when the sensor is triggered, and a vibration function allows for silent notifications when needed. Technical specifications 17 ringtones 5 adjustable volume levels Wireless range: 918FT/280M in open areas Motion detector rotation: 360 degrees left to right, 180 degrees top to bottom Power requirements: Motion sensor requires 3 AAA batteries; receiver requires 3 AA batteries Compatibility and accessories Expandable system: Can add up to 32 transmitters (e.g., motion sensors, magnetic sensors) Can add up to 8 remotes Installation Easy