This is a multifunctional pager developed by combining WiFi+RF technology, mainly used for anti-theft, doorbell, elderly call, etc. Convenient to use for elderly distress calls, door and window opening alarm, doorbell prompts, and more. Support mobile phone selection of different music call sounds and remote mobile app control. Features: Multifunctional nurse alert system with functions of elderly call+anti-theft alarm+doorbell. 12 built-in music as alarm ringtones for you to switch freely, choose any area prompt tone on your phone, such as grandpa's room, grandma's room, child's room, alarm prompt tone, etc. One receiver can pair with multi call buttons up to 200, perfect to alert you once the elderly needs help no matter where you are. Supports any combination of 200 wireless learning accessories, such as RF door magnet, doorbell button, intrusion infrared, SOS distress button, wireless water range, etc. Full process mobile APP monitoring, it allows you real time controlling via your mobile phone anywhere anytime. Sound alarming when doors and windows are opened, and push mobile phone app notifications. The call button can be fixed to the wall with sticky pad included or can be worn with the neck lanyard included. Receiver with external siren interface, which can be used in conjunction with a speaker. Specifications: Type: 1 Receiver 1 Call Button / 1 Receiver 2 Call Buttons (Optional) Material: ABS Operating Voltage: DC5V Quiescent Current: 60mA Alarm Current: 200mA Radio Frequency: 433.92MHz WiFi Standard: IEEE 802.11 b/g/n 2.4GHz APP: Smart Life Working Temperature: -10~50 Call Button Power Supply: 1 * 3V CR2032 button battery Receiver Power Supply: DC5V (USB) Call Button: 50 * 50 * 13mm / 1.97 * 1.97 * 0.51in Receiver Size: 86 * 86 * 23mm / 3.39 * 3.39 * 0.91in Item Weight: 124g / 4.37oz, 146g / 5.16oz Package Weight: 163g / 5.76oz, 185g / 6.54oz Package Size: 10.7 * 10.5 * 4.5cm / 4.21 * 4.13 * 1.77in Package List: 1 * Receiver 1/2 * Call Button (options) 1/2 * Neck Strap (options) 1 * USB Cable 2 * Screw 2 * Anchor