WiFi DOOR SENSOR WITH APP ALERTS: No hub required and No fees charge. Control with the "Tuya Smart" or "Smart Life" app. Get instant app free notification alerts on your smartphone when doors or windows open or close. Note: door sensor only works with 2.4GHz WiFi, not works with 5G. | SPPPORTS VOICE CONTROL: Door alarms for home compatible with Amazon Alexa and Google Assistant. Alexa/Google is able to answer the question, "Alexa/Google, is the 'Device Name' Closed/Opened?" | LINK WITH OTHER TUYA SMART DEVICES: The smart window sensor can control other Tuya smart connected devices as the status of the door or window changes. For example, Automatically turn on your smart wall switches or smart lights when door opened. | LOW POWER WARNIGN & BATTERIES INCLUDED: Door open alert powered by 2*AAA batteries(INCLUDED). Enjoy over six months of battery life with this door alarm sensor. When the battery is running low, it will automatically push messages through App to remind you to change battery, never worry about running out of battery. | EASY INSTALLATION AND WIDELY USE: Install the smart door sensor with the included 3M sticker for a firm and durable hold. Install the sensor on gates, mailboxes, refrigerators, drawers, bedrooms, garages, yards, pet doors, and more. Gaoducash provides a 24-month warranty for the door detector, please feel free to contact if you have any questions.

WIFI DOOR SENSOR: Upgraded Tuya door sensor with bluethooth and Wi-Fi dual connecting mode,Control with phone via Smart Life and Tuya Smart apps; No hub required, Simple setup wifi window alarms for home in minutes, available on Android and IOS. | DOOR OPEN/CLOSED REMINDERS: Protect your home with open/closed door detection. Receive APP Notifications on status change when opened or closed, with an entry save in History Log. | VOICE CONTROL: By connecting the smart sensor with Alexa or Google assistant to realized voice control. Come to make your smart home life more convenient and easier. | AUTOMATIC CONTROL OF ACCESSORIES AND SCENES: Door alarm sensor works with Tuya Smart/Smart Life/Alexa and Routines for Automation. Create routines /scene in Alexa or Smart Life/Tuya app to operate other Smart devices such as smart plug, smart remote, smart buld, siren alarm, etc. | LOW POWER WARNIGN & BATTERIES INCLUDED: Door open alert powered by 2*AAA batteries(INCLUDED). Enjoy over six months of battery life with this door alarm sensor. When the battery is running low, it will automatically push messages through App to remind you to change battery, never worry about running out of battery. Gaoducash provides a 24-month warranty for the door detector, please feel free to contact if you have any questions.

TUYA SMART/SMART LIFE APP REMOTE CONTROL: Download the "Tuya Smart" or "Smart life" app to control your wifi smart siren directly through your mobile device. Supports setting alarm volume, alarm duration, viewing alarm records, smart linkage, sharing and other functions. | SMART LINKAGE: This wireless smart siren adds audible to your existing home system. You can add door and window sensors, motion detectors, wireless doorbell and water detectors to form an effective standalone home house apartment security system. For example, during open the door, smart linkage and trigger siren with sounds and push real-time alerts to your mobile. | SUPPORT ALEXA AND GOOGLE SMART SPEAKER: Link the smart siren alarm with your home monitoring systems via alexa or Google speaker. You can easily control by Away, Disarm, and Home modes with your voice. | SELECTABLE TONES AND EASY INSTALLATION: 32 selectable alarm tones are pre installed, and the volume of each tone can be adjusted between 3 levels of the low, medium and high. Easily set up smart home security alarm in minutes. Plug into any electrical outlet with the USB power cable and screw onto wall. The alarm station should ALWAYS CONNECT to AC adapter. | WIFI ONE-KEY CONNECT: Without any hub. The wireless alarm system adopts 2.4GHZ wireless frequency, the wireless distance up to 55 meters, has a wide range of applications. NOTE: Does NOT support 5GHz WiFi networks.