MC400S WiFi Door Window Sensor – 90dB Smart Magnetic Contact Alarm with Tuya APP

Reliable Alarm & Alerts

• 90dB On‑Site Alarm – Loud siren deters intruders and alerts occupants

• APP Push Notifications – Instant alerts via Tuya / Smart Life when door/window is opened

• Double Alarm – Simultaneous local siren and remote notification for full coverage

Smart Monitoring

• Door/Window Status Query – Check open/closed status anytime from anywhere

• Opening History Record – View timestamps of every door/window event

• Battery Level Query – Monitor battery status directly in the app

Easy Installation

• 3M Adhesive Mounting – No tools, no wiring – just peel and stick

• Magnetic Control Distance – ≤15mm between sensor and magnet

• Small & Flexible – Compact design fits on doors, windows, drawers, cabinets, safes

Smart Home Integration

• WiFi Connection – 802.11 b/g/n (2.4GHz), no gateway required

• Tuya / Smart Life APP – Works with Amazon Alexa and Google Assistant

• Scene Automation – Create smart scenes like:

  • Open window → automatically turn off air conditioner

  • Open door at night → automatically turn on hallway light

Low Power & Reliable

• Ultra‑Low Quiescent Current – ≤55μA for long battery life

• Low Voltage Alert – APP notification when battery is low (≤2.4V)

• Wide Operating Environment – -10°C to +50°C, ≤95% RH

Wide Application

• Doors (main door, bedroom, balcony)

• Windows

• Drawers

• Filing cabinets

• Safes

• Medicine cabinets

• Garage doors