About This 【Dual Alert & Power Options】Smart dual alert system with LED light & 110db sound notifications. Flexible power supply via 3xAA alkaline batteries or Micro USB charging, ensuring 24/7 reliable operation for caregivers. 【Real-Time Movement Monitoring】Advanced wireless motion sensors detect bed exits & room departures. Simply place under bed or by doorway for instant alerts when seniors attempt to move unsupervised. 【500FT Extended Range Coverage】Industry-leading 500+ ft wireless range allows caregivers to monitor from anywhere - bedroom to backyard. Receiver features portable clip design for easy carrying throughout the home. 【Quick Setup & Self-Testing】Pre-paired for instant use - activates in 20 seconds with self-test confirmation (5 breathing flashes). No technical skills required - perfect for immediate elder care deployment. 【Customizable Alert Settings】Personalize with 17 alarm tones & adjustable volume (0-110db). Includes silent vibration mode for nighttime use. Complete kit contains: 1 Receiver, 1 Sensor, Micro USB cable, installation accessories & user manual. Overview Color : 2 Motion Sensors + 1 Receiver Brand : yiwei Power Source : Battery Powered Compatible Devices : Receiver Battery Description : Alkaline