Motion Sensor Door Chime, Wireless Motion Detector Alarm Indoor, Business Entry Alert Bell with Buzzer, Doorbell for Home/Garage Door/Store, USB/Battery Powered,1 Receiver +3 Sensors 1 Rreceiver 3 Sensors

• 35 Tones & Volume Control: 35 alarm ringtones (long/short variations) with 5 adjustable volume levels (0-100dB, including mute mode). Customize tones and volumes for home, store, or office scenarios to suit diverse needs
• Adjustable Detection Angle: Infrared motion sensor detects 13-26in (4-8m). 360° rotatable base with 30-110° angle adjustment enables precise monitoring for elderly dementia care or child activity, alerting when loved ones move/leave home
• Expandable Connectivity: Single receiver pairs with up to 20 alarm sensors. Assign unique or shared alerts to devices installed at store/business entrances, office doors, garages, mailboxes, etc
• Wide Wireless Coverage: 500ft (150m) signal range enables remote sensor placement, which can help you monitor the elderly/children getting up or leaving the room, also great for business owners to alert customer when they enter the store
• Easy Installation: Plug-and-play receiver; motion sensors attach via double-sided tape (wall-friendly) or screws (sturdy). Flexible installation options balance convenience and durability