Tuya WiFi Smart Door & Window Sensor with 90dB Built-in Alarm

DescriptionTuya WiFi Smart Door & Window Sensor: Real-Time Security with 90dB SirenTraditional door sensors tell you when someone enters after they are already inside. The MC400S WiFi Door Sensor goes a step further by providing an immediate audible deterrent. Whether it’s your main entrance, a safe, or a shop shutter, this device is your first line of defense.Dual Protection: Local Alarm Mobile AlertMost smart sensors are silent, but the MC400S is equipped with a 90dB alarm sound.Instant Deterrence: If a door or window is pried open, the loud siren warns the intruder immediately.Global Monitoring: No matter where you are in the world, your smartphone will receive a push notification the second the magnetic contact is broken.App History: Keep a detailed record of every “Open” and “Close” event directly in the TuyaSmart or Smart Life app.Smart Home Integration & Voice ControlAs a core part of the Tuya / Smart Life ecosystem, this sensor plays well with others:Voice Assistant Compatible: “Alexa, is the front door closed?” or “Hey Google, check the office window.”Smart Linkage Control: Create automation scenes. For example, set your Tuya / Smart Life WiFi Switches to turn on the lights automatically when the front door opens at night.Low Battery Intelligence: Never worry about a dead sensor. The app provides low-battery detection alerts when the voltage drops below 2.4V.Easy Installation & Reliable DesignDesigned for the modern Bangladeshi home, the MC400S is sleek and unobtrusive:No Hub Required: Connects directly to your 2.4GHz WiFi router.Tool-Free Setup: Use the included high-quality double-sided tape to mount it on any surface in seconds.Wide Compatibility: Works on doors, windows, drawers, cupboards, and safe boxes.Technical SpecificationsFeatureSpecificationModelMC400SApp SupportTuya Smart / Smart LifeConnectivityWiFi 2.4GHz (IEEE 802.11 b/g/n)Alarm Decibel≤ 90dB at 1 MeterMagnetic Distance≤ 15mmPower Supply2x AAA 1.5V BatteriesStandby Current≤ 10uAMaterialHigh-Quality ABS PlasticOperating Temp-10°C to 50°CWhat’s in the Box?1x WiFi Door/Window Sensor (Main & Magnetic part)2x AAA 1.5V Batteries1x Set of Double-sided Mounting Tape1x User Manual