[Wi-Fi Connection & Smart APP Control] This caregiver pager connects to a cell phone via Wi-Fi, enabling remote operation through a smartphone app. The initial setup requires the cell phone, pager, and call button to be on the same Wi-Fi network. Once connected, the phone can clearly receive the alarm signal when the SOS call button is triggered, allowing caregivers to stay informed about the elderly persons needs.[Audible/Visual Dual Alarm] When the emergency call button is pressed, the caregiver pager sounds an alarm and the built-in LED indicator in the SOS area flashes red to alert the caregiver. The emergency alert system offers 12 ringtone options and 4 adjustable volume levels ranging from 0dB to 90dB. A silent mode with LED flashing is also available.[Easy to Use] The elderly life alert device operates by connecting to a power source using the included USB cable and does not require batteries, eliminating concerns about power failure. After pairing the cell phone with the pager, additional call buttons can be configured through the smartphone app based on individual needs. Up to 100 call buttons can be added via the app, and SOS button names can be customized for easy identification.[Long Range Calling] The maximum alarm range between the receiver and the emergency call button is up to 330 ft (100 m) in open areas. Note that signal strength may be affected by walls or metal objects. For optimal performance, place the receiver near the Wi-Fi router to minimize interference.[Wide Application] The life alert button is lightweight and portable, featuring a lanyard design for easy carrying around the neck, in a pocket, or on the waist. It is waterproof and suitable for use in the bathroom (not intended for use in the shower or submerged in water). Ideal for use by individuals with mobility challenges, seniors, post-fall recovery patients, hospital bed patients, pregnant women, and others needing assistance.Type: B (4-button configuration) Color: As shown Material: Plastic Package Contents: 1 x Emergency caller 1 x USB cable 4 x Call button 1 x English manual Note: Light reflection and differences in display screens may cause slight variations between the color shown in images and the actual product. Measurement may vary by 1-3 cm.