1、2 Ways Voice Interoperability Function: This smart home security system supports 2 ways voice interoperability function, compatible with for Tuya hardware support up to 99 defence zones, with accurate instant alarms for illegal intrusion. 2、Safe And Reliable: This WiFi home alarm system has main power failure alarm, backup battery shortage alarm, sensor battery low voltage alarm function, comes with anti tampering alarm function, arming doors and windows are not closed warning. 3、Remote Control: This smart home security system supports access to for Tuya Cloud, intelligent voice control, APP push, you can control it remotely from your mobile phone, which is very convenient. 4、High Decibel Alarm: This smart home security alarm kit comes with a high decibel alarm, sound up to 115dB, and features a built in doorbell function and emergency help function, which is very convenient and practical. 5、Wide Application: This WIFI wireless home security alarm system has a wide range of applications which can be used in homes, apartments, villas, hotels or offices, etc. Item Type: WiFi Home Alarm System Material: ABS Wireless Frequency: 433Mhz 2.4G 125K Wireless Encoding: eV1527 WIFI System: 2.4G IEEE802.11b/g/n Wireless Standard Alarm Horn Battery: 3.7V Lithium Battery x1 (1000mAh) (Shipped With Built In Battery) Remote Control Battery: cr2025 x1 (200mAh) (Shipped With Built In Battery) Main Door Magnet: cr2025 x1 (200mAh) (Shipped With Built In Battery) Operating Temperature: -10-55℃ Relative Humidity: ＜80% (Non Condensing) Built In Voice Prompt Function, Supports 10 Common National Languages (Chinese, English, German, Russian, Spanish, Polish, Italian, French, Portuguese, Greek) 1 x Alarm 1 x Infrared Motion Sensor 1 x Main Door Magnet 1 x Secondary Door Magnet 1 x Siren 2 x Remote Controllers 2 x Door Card Readers 1 x Manual 1 x Plug 1 x USB Cable 4 x Screws 4 x Expansion Screws 2 x Adhesive Tapes 1 x Accessory