This is a combination of WiFi + RF technology to develop multi-functional pager, mainly used in the elderly distress call, door and window open call, doorbell prompts, etc., support for cell phones to choose different music call sound, remote cell phone APP full control. Features: Small size multi-function, anti-theft alarm + doorbell + elderly call. Built-in 12 alarm sound any choice. Hear and Know: The mobile phone can choose any region prompt tone (such as: different alarm sounds in the elderly room, living room, children's room, etc.). Support 200 channels of wireless learning accessories (such as RF door magnet, doorbell button, intrusion infrared, SOS distress button, wireless water range, etc.) Full Moblie App Monitoring: At home and out, everything is in your hands, rest assured. Burglar Alarm: When the doors and windows are opened, an alarm sound is issued to intimidate and the mobile phone APP alarm. Specifications: Material: ABS Operating Voltage: 5V Static Current: 60mA Alarm Current: 200mA Wireless Frequency: 433.92MHz Wi-Fi: IEEE 802.11 b/g/n 2.4G Battery Power Duration: 4 hours Working Temperature: -10~50 Number of Wireless Detectors: 200 Wireless Protocol: 1527 Wireless Reception Distance: 100 meters in the open Item Size: 85 * 85 * 23mm / 3.35 * 3.35 * 0.91in Item Weight: 98g / 3.45oz Package Weight: 288g / 10.16oz Package Size: 13.5 * 11.5 * 6cm / 5.31 * 4.53 * 2.36in Package List: 1 * Smart Wireless Caregiver Pager 3 * Pair ofWireless Door Detector 1 * Remote Control 1 * USB Cable 2 * Screw 2 * Anchor 1 * User Manual (English)