Dual Reminder and Power Supply: This bed alarm system for the elderly features both LED light and sound alerts to prompt attention. It can be powered by either alkaline batteries or a Micro-USB, providing flexibility and reliability in power sources for continuous operation. Efficient Monitoring of Elderly Movements: Strategically place the wireless motion sensors under the bed or at doorways to detect any movement. The system triggers an alarm when an elderly individual attempts to leave the bed or room, enhancing safety and giving caregivers peace of mind. Extended Wireless Range: Enjoy the freedom to move the receiver within a 500+ ft range without losing signal. This feature allows caregivers to carry out their daily tasks anywhere in the home or yard without losing connection to the monitored individual. Ready-to-Use Convenience: The sensor and receiver are pre-paired for immediate use. Simply turn on the system, and it conducts a self-test by the indicator light breathing 5 times, becoming operational in just 20 seconds, ensuring no time is wasted in setup. Customizable Alerts: Tailor alert settings to meet specific needs with 17 different ringing tones and volume adjustments ranging from 0db to 110db. The vibration mode offers a discreet alert option, minimizing disturbances to others while ensuring the caregiver is notified. Colour:White Material:plastic Package Contents: 4 x sensors 2 x receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.