MC400A WiFi Door Window Sensor – Real‑Time Alerts, Smart Scenes, Easy Installation
Get instant push notifications when doors or windows open. Create smart scenes like turning on lights when you enter, or automatically turning off air conditioning when windows open. Ultra‑low power consumption, long battery life, and simple 3M adhesive installation.
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
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
Standby Current – ≤45µA for extended battery life
Alarm Current – ≤160mA during transmission
Low Battery Alert – APP notification when voltage drops below 2.6V
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
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
| Parameter | Specification |
|---|---|
| Model | MC400A |
| Product Type | WiFi Door Window Sensor |
| Power Supply | DC3V (1×CR2032 button battery) |
| Quiescent Current | ≤45μA |
| Alarm Current | ≤160mA |
| Low Voltage Alert | ≤2.6V (APP notification) |
| Magnetic Control Distance | ≥15mm |
| Wireless Protocol | WiFi 802.11 b/g/n (2.4GHz) |
| APP Compatibility | Tuya Smart / Smart Life |
| Installation | 3M adhesive tape |
| Operating Temperature | -10°C to +50°C |
| Operating Humidity | ≤95% RH |
| Package Includes | Sensor unit, magnet, 3M adhesive tape, CR2032 battery, user manual |
