【ZX-D21】
Wifi Door Sensor

ZX‑D21 keeps 24‑7 monitoring on your doors, windows, cabinets and drawers. You can view open‑closed status directly on Tuya APP from anywhere. Whenever the magnetic segments get separated by opening actions, the sensor captures events instantly. It is perfect for home anti‑intrusion, kid safety supervision and reminder for forgetting closed windows. Compact form factor supports simple adhesive installation on almost all flat surfaces for daily household safety tracking.

Receive real‑time push alerts on your smartphone once doors or windows are opened or closed. The Tuya Smart Life APP serves as your remote safety hub. No matter you are at home or away, you get immediate event notifications. Download the APP from Google Play or App Store for free. This function helps you respond quickly to unexpected access, preventing potential safety risks for houses, apartments and vacation homes.

Work with other Tuya smart devices for customized home automation. For example, trigger lights to turn on automatically when the door sensor detects separation. Build personalized smart scene workflows without complex configuration. The sensor acts as an important trigger node in your Tuya smart home ecosystem. Expand your home intelligence, and realize seamless interconnection among multiple smart home gadgets for convenient automated living experience.

Share ZX‑D21 with all family members for free. Every family member can hold independent accounts with full access permissions. Everyone can receive opening‑closing push notifications and check device status remotely. You can also edit permissions and re‑share devices within the APP. No need to pass one single phone around. All household members stay informed about door‑window events for whole‑family home safety awareness.

Equipped with tamper‑resistant alarm function, it triggers alert if someone attempts to remove or sabotage the sensor. Built‑in battery status display reminds users to replace AAA batteries timely. Ultra‑low standby current greatly extends battery runtime. It connects directly to 2.4GHz WiFi, no extra gateway needed. Suitable for doors, windows, drawers and cabinets, offering reliable long‑term monitoring for residential security applications.