MC400A WiFi Door Window Sensor – Tuya Smart Magnetic Contact Alarm with App Alerts

Real‑Time Monitoring & Alerts

• Instant APP Notifications – Receive push alerts when doors or windows open or close

• Open/Close Status Query – Check door/window status anytime from anywhere via Tuya APP

• Event History – View timestamps of every door/window event

Smart Scene Automation

• Intelligent Linkage – Create automations with other Tuya smart devices

• Example Scenarios:

  • Open the door → automatically turn on hallway lights

  • Open window for ventilation → air conditioner automatically turns off

  • Door left open → receive reminder notification

Ultra‑Low Power Consumption

• Standby Current – ≤45µA for extended battery life

• Alarm Current – ≤160mA during transmission

• Low Battery Alert – APP notification when voltage drops below 2.6V

Easy Installation

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

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

• Compact Design – Small footprint blends into any decor

Technical Specifications

• Power Supply – DC3V (1×CR2032 button battery)

• Wireless Protocol – WiFi 802.11 b/g/n (2.4GHz)

• Working Temperature – -10°C to +50°C

• Working Humidity – ≤95% RH

• Magnetic Control Distance – ≥15mm